Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.newCreate a CVE report
Check your stack
CVE-2026-99230

io_uring/cmd: don't leave list poison in ->hash_node

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

5 ranges
Linux version evidence

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

affected

93b8cc60c37b9d17732b7a297e5dca29b50a990d → before cc7f13d006fcefed9564bd79f135b51d344e9c77

git versions

93b8cc60c37b9d17732b7a297e5dca29b50a990d → before 2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707

git versions

93b8cc60c37b9d17732b7a297e5dca29b50a990d → before 685b49483200384d7f49d338af476e26e6824637

git versions

93b8cc60c37b9d17732b7a297e5dca29b50a990d → before c4fe1024b2f3f40f8010591a0c0ad541e2883eda

git versions

93b8cc60c37b9d17732b7a297e5dca29b50a990d → before 4c83e39f4d1944d7146fd06094f2c8053238d55c

git versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

7 ranges
Linux version evidence

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

affected

6.7

unaffected

0 → before 6.7

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/cmd: don't leave list poison in ->hash_node

io_uring_cmd_del_cancelable() uses hlist_del() to take a command off ->cancelable_uring_cmd, which leaves LIST_POISON1/2 behind in ->hash_node. Requests are recycled through the request cache without being reinitialised, and not every user of ->hash_node sets it up before it is used:

If a vectored futex wait is woken while futex_wait_multiple_setup() is still queueing the futexes, io_futexv_wait() doesn't add the request to ->futex_list, and leaves the completion to the task_work queued by the wake up. io_futexv_complete() ends in __io_futex_complete(), whose hlist_del_init() is fine for a request that is unhashed, which is how all other users of the node leave it. If the request was a cancelable uring_cmd in its previous life, e.g. a ublk FETCH_REQ, it writes through LIST_POISON2:

Oops: general protection fault, probably for non-canonical address KASAN: maybe wild-memory-access in range [0xdead000000000120-...] RIP: 0010:io_futexv_complete+0x219/0x420 Call Trace: tctx_task_work_run+0x804/0x950 tctx_task_work+0x71/0xa0 task_work_run+0x118/0x200

Leave the node unhashed.

References

5 sources
git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77
Source referenceLinux
git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707
Source referenceLinux
git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637
Source referenceLinux
git.kernel.org/stable/c/c4fe1024b2f3f40f8010591a0c0ad541e2883eda
Source referenceLinux
git.kernel.org/stable/c/4c83e39f4d1944d7146fd06094f2c8053238d55c
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-2026-99230

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): 6.7

Before: 6.12.115

Vulnerable product

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

From (inclusive): 6.7

Before: 6.18.60

Vulnerable product

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

From (inclusive): 6.7

Before: 7.2.14

Vulnerable product

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

From (inclusive): 6.7

Before: 7.3.2

Vulnerable product

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

From (inclusive): 6.7

Before: 7.4-rc1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.7",
            "versionEndExcluding": "6.12.115"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.7",
            "versionEndExcluding": "6.18.60"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.7",
            "versionEndExcluding": "7.2.14"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.7",
            "versionEndExcluding": "7.3.2"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.7",
            "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-2026-99230

    Observed 2026-11-06T17:58:55.120Z · upstream updated 2026-11-06T17:15:11.543Z

    Product or version evidence changed

    before

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "cc7f13d006fcefed9564bd79f135b51d344e9c77",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "685b49483200384d7f49d338af476e26e6824637",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "4c83e39f4d1944d7146fd06094f2c8053238d55c",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99230"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "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-2026-99230"
  }
]

    after

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "cc7f13d006fcefed9564bd79f135b51d344e9c77",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "685b49483200384d7f49d338af476e26e6824637",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "c4fe1024b2f3f40f8010591a0c0ad541e2883eda",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "4c83e39f4d1944d7146fd06094f2c8053238d55c",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99230"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "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-2026-99230"
  }
]
    References changed

    before

    [
  "https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77",
  "https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
  "https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637",
  "https://git.kernel.org/stable/c/4c83e39f4d1944d7146fd06094f2c8053238d55c"
]

    after

    [
  "https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77",
  "https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
  "https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637",
  "https://git.kernel.org/stable/c/c4fe1024b2f3f40f8010591a0c0ad541e2883eda",
  "https://git.kernel.org/stable/c/4c83e39f4d1944d7146fd06094f2c8053238d55c"
]
    Environment requirements changed

    before

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "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": "6.7",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "7.3.2"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "7.4-rc1"
              }
            ]
          }
        ]
      }
    ]
  }
]
  2. CVE · CVE-2026-99230

    Observed 2026-11-03T19:50:30.849Z · upstream updated 2026-11-03T19:13:01.012Z

    Product or version evidence changed

    before

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "cc7f13d006fcefed9564bd79f135b51d344e9c77",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "685b49483200384d7f49d338af476e26e6824637",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99230"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "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-2026-99230"
  }
]

    after

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "cc7f13d006fcefed9564bd79f135b51d344e9c77",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "685b49483200384d7f49d338af476e26e6824637",
        "versionType": "git"
      },
      {
        "version": "93b8cc60c37b9d17732b7a297e5dca29b50a990d",
        "status": "affected",
        "lessThan": "4c83e39f4d1944d7146fd06094f2c8053238d55c",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99230"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.7",
        "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-2026-99230"
  }
]
    References changed

    before

    [
  "https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77",
  "https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
  "https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637"
]

    after

    [
  "https://git.kernel.org/stable/c/cc7f13d006fcefed9564bd79f135b51d344e9c77",
  "https://git.kernel.org/stable/c/2d5af21422060c088f6e4fb0f1e7dcf5bcdd6707",
  "https://git.kernel.org/stable/c/685b49483200384d7f49d338af476e26e6824637",
  "https://git.kernel.org/stable/c/4c83e39f4d1944d7146fd06094f2c8053238d55c"
]
    Environment requirements changed

    before

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "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": "6.7",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.7",
                "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.