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CVE-2026-99255

io_uring/io-wq: don't hide a link from cancellations

Products / packages Linux

Published

Share

Severity and exploitation

Not in CISA KEVNo CVSS score

KEV coverage does not rule out exploitation.

KEV checked 06/11/2026, 21:10:31 UTC

Severity

unknown

CVSS measures technical severity, not the likelihood of an attack.

Known exploitation

Not listed in the checked CISA KEV catalog

Absence from CISA KEV does not rule out attacks.

Public exploit

Not established by this record

Missing evidence does not mean no public exploit exists.

Remediation

Fix status not established

No structured fix or guidance is available here. Check the latest publisher advisory.

What this means

In the Linux kernel, the following vulnerability has been resolved:

Source excerpt · Linux

Attack conditions

No attack-condition excerpt has been identified here. Review the full source description and references for authentication, network access, and configuration requirements.

Review supporting sources →

Affected versions

Check the exact model, release, and any platform requirements against your installation.

Linux · Linux

Linux

7 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

768134d4f48109b90f4248feecbeeb7d684e410c → before 98470f164286f7f62aaee519d4d11b9370ce6d7b

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before ebe8e97fb99d9f374c482902a00677cfd24a6c27

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before 3e02b8df0e9fa1423ac2a4e03409a9329c30ac49

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before 92e20e9c72bdf6cfa6f84eded7b33399bc7061da

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before 59e45f44c3cea9f4b2d099171c3cec1d25c5b638

git versions

768134d4f48109b90f4248feecbeeb7d684e410c → before 436d48a2ed13112d2d27085325838e5bce6b4507

git versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

9 ranges
Linux version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

5.5

unaffected

0 → before 5.5

semver versions

6.1.191 → through 6.1.*

semver versions

6.6.161 → through 6.6.*

semver versions

6.12.115 → through 6.12.*

semver versions

6.18.60 → through 6.18.*

semver versions

7.2.14 → through 7.2.*

semver versions

7.3.2 → through 7.3.*

semver versions

7.4-rc1 → through *

original_commit_for_fix versions

unknown

Other versions: affected

Automatic dependency matching is unavailable for this record. Use the product evidence and publisher’s instructions to check your installation.

What to do

Compare your installed product and version with the affected versions above. A matching product name alone does not confirm exposure.

No structured fix or remediation guidance is available here. Check the full source description and vendor’s latest advisory for a patch or workaround; do not assume another version is safe.

cve.new guidance unless attributed to a publisher. This page does not inspect your installation.

Public exploit evidence

No public exploit reference is identified in the imported evidence. This is not a claim that no exploit exists.

Original source description

Read the full publisher description

In the Linux kernel, the following vulnerability has been resolved:

io_uring/io-wq: don't hide a link from cancellations

A task that exits cancels its tracked requests and waits until they are gone. io_uring_cancel_generic() looks everywhere a request can be, and goes to sleep if it found nothing to cancel. It is woken up each time one of the requests of the task is completed by task work or freed.

When io-wq is done with a request that has a link, there is a time in which the next request of the link can't be found:

io_worker_handle_work() io_assign_current_work(worker, NULL) io_wq_free_work(work) io_req_find_next() // takes the link off the request io_free_req() // task work for the task io_assign_current_work(worker, linked) io_run_task_work() cond_resched() worker->cur_work = linked

It is not pending, it is not the current work of a worker, and it is not yet on the list that it is about to be parked on. If the pass that the exiting task makes because of io_free_req() falls into that time, it finds nothing and the task goes to sleep. The worker then runs the link, which IO_WQ_BIT_EXIT doesn't prevent for bounded work. If that parks the request nothing is completed or freed, and nobody wakes up the task. If it is the process that exits it can't be killed any more either.

NOP, IOSQE_ASYNC | IOSQE_IO_LINK FUTEX_WAIT, FUTEX2_PRIVATE exit of the thread, or of the process, up to 63us later

With four of these per round 5 to 8 of 10,000 rounds hang (4 CPUs, KVM):

io_uring_cancel_generic do_exit

Commit f8b632e89a10 ("io_uring: tighten task exit cancellations") is about the same gap, and makes the task look again for whatever happens before io_free_req().

Free the request once the link is the current work of the worker, or pending. Whoever is woken up by that can find the link, until it is parked where cancellations look as well. To do so split io_wq_free_work() in two.

References

7 sources
git.kernel.org/stable/c/98470f164286f7f62aaee519d4d11b9370ce6d7b
Source referenceLinux
git.kernel.org/stable/c/d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4
Source referenceLinux
git.kernel.org/stable/c/ebe8e97fb99d9f374c482902a00677cfd24a6c27
Source referenceLinux
git.kernel.org/stable/c/3e02b8df0e9fa1423ac2a4e03409a9329c30ac49
Source referenceLinux
git.kernel.org/stable/c/92e20e9c72bdf6cfa6f84eded7b33399bc7061da
Source referenceLinux
git.kernel.org/stable/c/59e45f44c3cea9f4b2d099171c3cec1d25c5b638
Source referenceLinux
View 1 more references
git.kernel.org/stable/c/436d48a2ed13112d2d27085325838e5bce6b4507
Source referenceLinux

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification · not supplied
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-99255

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

Linux · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 6.1.191

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 6.6.161

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 6.12.115

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 6.18.60

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 7.2.14

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 7.3.2

Vulnerable product

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

From (inclusive): 5.5

Before: 7.4-rc1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "6.1.191"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "6.6.161"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "6.12.115"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "6.18.60"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "7.2.14"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "7.3.2"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "5.5",
            "versionEndExcluding": "7.4-rc1"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 1
Linux

Assigning organization

2026-11-06

Timeline

All times UTC

  1. Advisory published

    Publication date supplied by the source.

  2. Source updated

    Latest modification date supplied by the source.

  3. Last imported by cve.new

    Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes
  1. CVE · CVE-2026-99255

    Observed 2026-11-06T17:59:05.433Z · upstream updated 2026-11-06T17:15:13.796Z

    Product or version evidence changed

    before

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
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      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "98470f164286f7f62aaee519d4d11b9370ce6d7b",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "ebe8e97fb99d9f374c482902a00677cfd24a6c27",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "436d48a2ed13112d2d27085325838e5bce6b4507",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "status": "unaffected",
        "lessThanOrEqual": "6.1.*",
        "versionType": "semver"
      },
      {
        "version": "6.6.161",
        "status": "unaffected",
        "lessThanOrEqual": "6.6.*",
        "versionType": "semver"
      },
      {
        "version": "6.12.115",
        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
      {
        "version": "7.4-rc1",
        "status": "unaffected",
        "lessThanOrEqual": "*",
        "versionType": "original_commit_for_fix"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  }
]

    after

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "98470f164286f7f62aaee519d4d11b9370ce6d7b",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "ebe8e97fb99d9f374c482902a00677cfd24a6c27",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "59e45f44c3cea9f4b2d099171c3cec1d25c5b638",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "436d48a2ed13112d2d27085325838e5bce6b4507",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "status": "unaffected",
        "lessThanOrEqual": "6.1.*",
        "versionType": "semver"
      },
      {
        "version": "6.6.161",
        "status": "unaffected",
        "lessThanOrEqual": "6.6.*",
        "versionType": "semver"
      },
      {
        "version": "6.12.115",
        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
      {
        "version": "7.3.2",
        "status": "unaffected",
        "lessThanOrEqual": "7.3.*",
        "versionType": "semver"
      },
      {
        "version": "7.4-rc1",
        "status": "unaffected",
        "lessThanOrEqual": "*",
        "versionType": "original_commit_for_fix"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  }
]
    References changed

    before

    [
  "https://git.kernel.org/stable/c/98470f164286f7f62aaee519d4d11b9370ce6d7b",
  "https://git.kernel.org/stable/c/d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
  "https://git.kernel.org/stable/c/ebe8e97fb99d9f374c482902a00677cfd24a6c27",
  "https://git.kernel.org/stable/c/3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
  "https://git.kernel.org/stable/c/92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
  "https://git.kernel.org/stable/c/436d48a2ed13112d2d27085325838e5bce6b4507"
]

    after

    [
  "https://git.kernel.org/stable/c/98470f164286f7f62aaee519d4d11b9370ce6d7b",
  "https://git.kernel.org/stable/c/d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
  "https://git.kernel.org/stable/c/ebe8e97fb99d9f374c482902a00677cfd24a6c27",
  "https://git.kernel.org/stable/c/3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
  "https://git.kernel.org/stable/c/92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
  "https://git.kernel.org/stable/c/59e45f44c3cea9f4b2d099171c3cec1d25c5b638",
  "https://git.kernel.org/stable/c/436d48a2ed13112d2d27085325838e5bce6b4507"
]
    Environment requirements changed

    before

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.1.191"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.6.161"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.4-rc1"
              }
            ]
          }
        ]
      }
    ]
  }
]

    after

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.1.191"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.6.161"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.3.2"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.4-rc1"
              }
            ]
          }
        ]
      }
    ]
  }
]
  2. CVE · CVE-2026-99255

    Observed 2026-11-03T19:51:10.439Z · upstream updated 2026-11-03T19:13:14.626Z

    Product or version evidence changed

    before

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "98470f164286f7f62aaee519d4d11b9370ce6d7b",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "ebe8e97fb99d9f374c482902a00677cfd24a6c27",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "status": "unaffected",
        "lessThanOrEqual": "6.1.*",
        "versionType": "semver"
      },
      {
        "version": "6.6.161",
        "status": "unaffected",
        "lessThanOrEqual": "6.6.*",
        "versionType": "semver"
      },
      {
        "version": "6.12.115",
        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  }
]

    after

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "98470f164286f7f62aaee519d4d11b9370ce6d7b",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "ebe8e97fb99d9f374c482902a00677cfd24a6c27",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
        "versionType": "git"
      },
      {
        "version": "768134d4f48109b90f4248feecbeeb7d684e410c",
        "status": "affected",
        "lessThan": "436d48a2ed13112d2d27085325838e5bce6b4507",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5.5",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "version": "6.1.191",
        "status": "unaffected",
        "lessThanOrEqual": "6.1.*",
        "versionType": "semver"
      },
      {
        "version": "6.6.161",
        "status": "unaffected",
        "lessThanOrEqual": "6.6.*",
        "versionType": "semver"
      },
      {
        "version": "6.12.115",
        "status": "unaffected",
        "lessThanOrEqual": "6.12.*",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "status": "unaffected",
        "lessThanOrEqual": "6.18.*",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "status": "unaffected",
        "lessThanOrEqual": "7.2.*",
        "versionType": "semver"
      },
      {
        "version": "7.4-rc1",
        "status": "unaffected",
        "lessThanOrEqual": "*",
        "versionType": "original_commit_for_fix"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99255"
  }
]
    References changed

    before

    [
  "https://git.kernel.org/stable/c/98470f164286f7f62aaee519d4d11b9370ce6d7b",
  "https://git.kernel.org/stable/c/d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
  "https://git.kernel.org/stable/c/ebe8e97fb99d9f374c482902a00677cfd24a6c27",
  "https://git.kernel.org/stable/c/3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
  "https://git.kernel.org/stable/c/92e20e9c72bdf6cfa6f84eded7b33399bc7061da"
]

    after

    [
  "https://git.kernel.org/stable/c/98470f164286f7f62aaee519d4d11b9370ce6d7b",
  "https://git.kernel.org/stable/c/d39ebc7a583d650b1d6da9b45e2ce96ad4d877e4",
  "https://git.kernel.org/stable/c/ebe8e97fb99d9f374c482902a00677cfd24a6c27",
  "https://git.kernel.org/stable/c/3e02b8df0e9fa1423ac2a4e03409a9329c30ac49",
  "https://git.kernel.org/stable/c/92e20e9c72bdf6cfa6f84eded7b33399bc7061da",
  "https://git.kernel.org/stable/c/436d48a2ed13112d2d27085325838e5bce6b4507"
]
    Environment requirements changed

    before

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.1.191"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.6.161"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.2.14"
              }
            ]
          }
        ]
      }
    ]
  }
]

    after

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.1.191"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.6.161"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "5.5",
                "versionEndExcluding": "7.4-rc1"
              }
            ]
          }
        ]
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.