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CVE-2026-99245

KEYS: Fix key_reject_and_link() race with keyring restriction

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

9 ranges
Linux version evidence

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

affected

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before c7956ec99ad0e173720d95de9fa788bb077809f2

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 72f367417a6aee56821d0b0114cfd2b080008b63

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 19dfc37c9deefa69dc805d01d35d1f2fd7902e33

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 5787887eba0f0979a8c86d03a8e891395d5c24ad

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 01835d3a3709be508ae5209f806640336c48e395

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 6fc0c818b1cac66003e937c8a0d3bfb23fd3f130

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 23a9163cc40b4996ba1e20533b1210a1a0bee416

git versions

5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c → before 0b157166e612b70f98a332b6c7be7eac6f8e9593

git versions

unaffected

unknown

Other versions: unaffected

Linux · Linux

Linux

11 ranges
Linux version evidence

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

affected

4.7

unaffected

0 → before 4.7

semver versions

5.10.273 → through 5.10.*

semver versions

5.15.224 → through 5.15.*

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

7.3.1 → 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:

KEYS: Fix key_reject_and_link() race with keyring restriction

The restrict_link check in key_reject_and_link() is done before taking the keyring semaphore, racing with a concurrent keyring_restrict() that installs the restriction while holding the semaphore in write mode.

Move the check to after __key_link_lock(), so it is done under the semaphore, matching the pattern used in __key_create_or_update().

References

9 sources
git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2
Source referenceLinux
git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f
Source referenceLinux
git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63
Source referenceLinux
git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33
Source referenceLinux
git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad
Source referenceLinux
git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395
Source referenceLinux
View 3 more references
git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130
Source referenceLinux
git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416
Source referenceLinux
git.kernel.org/stable/c/0b157166e612b70f98a332b6c7be7eac6f8e9593
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-2026-99245

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): 4.7

Before: 5.10.273

Vulnerable product

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

From (inclusive): 4.7

Before: 5.15.224

Vulnerable product

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

From (inclusive): 4.7

Before: 6.1.191

Vulnerable product

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

From (inclusive): 4.7

Before: 6.6.161

Vulnerable product

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

From (inclusive): 4.7

Before: 6.12.115

Vulnerable product

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

From (inclusive): 4.7

Before: 6.18.60

Vulnerable product

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

From (inclusive): 4.7

Before: 7.2.14

Vulnerable product

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

From (inclusive): 4.7

Before: 7.3.1

Vulnerable product

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

From (inclusive): 4.7

Before: 7.4-rc1

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "5.10.273"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "5.15.224"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "6.1.191"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "6.6.161"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "6.12.115"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "6.18.60"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "7.2.14"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "7.3.1"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "4.7",
            "versionEndExcluding": "7.4-rc1"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 1
Linux

Assigning organization

2026-11-03

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-2026-99245

    Observed 2026-11-03T19:51:00.864Z · upstream updated 2026-11-03T19:13:10.812Z

    Product or version evidence changed

    before

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "c7956ec99ad0e173720d95de9fa788bb077809f2",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "72f367417a6aee56821d0b0114cfd2b080008b63",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "19dfc37c9deefa69dc805d01d35d1f2fd7902e33",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "5787887eba0f0979a8c86d03a8e891395d5c24ad",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "01835d3a3709be508ae5209f806640336c48e395",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "6fc0c818b1cac66003e937c8a0d3bfb23fd3f130",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "23a9163cc40b4996ba1e20533b1210a1a0bee416",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99245"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "4.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "4.7",
        "versionType": "semver"
      },
      {
        "version": "5.10.273",
        "status": "unaffected",
        "lessThanOrEqual": "5.10.*",
        "versionType": "semver"
      },
      {
        "version": "5.15.224",
        "status": "unaffected",
        "lessThanOrEqual": "5.15.*",
        "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": "7.3.1",
        "status": "unaffected",
        "lessThanOrEqual": "7.3.*",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "affected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99245"
  }
]

    after

    [
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "c7956ec99ad0e173720d95de9fa788bb077809f2",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "72f367417a6aee56821d0b0114cfd2b080008b63",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "19dfc37c9deefa69dc805d01d35d1f2fd7902e33",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "5787887eba0f0979a8c86d03a8e891395d5c24ad",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "01835d3a3709be508ae5209f806640336c48e395",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "6fc0c818b1cac66003e937c8a0d3bfb23fd3f130",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "23a9163cc40b4996ba1e20533b1210a1a0bee416",
        "versionType": "git"
      },
      {
        "version": "5ac7eace2d00eab5ae0e9fdee63e38aee6001f7c",
        "status": "affected",
        "lessThan": "0b157166e612b70f98a332b6c7be7eac6f8e9593",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99245"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "4.7",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "4.7",
        "versionType": "semver"
      },
      {
        "version": "5.10.273",
        "status": "unaffected",
        "lessThanOrEqual": "5.10.*",
        "versionType": "semver"
      },
      {
        "version": "5.15.224",
        "status": "unaffected",
        "lessThanOrEqual": "5.15.*",
        "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": "7.3.1",
        "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-2026-99245"
  }
]
    References changed

    before

    [
  "https://git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2",
  "https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f",
  "https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63",
  "https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33",
  "https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad",
  "https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395",
  "https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130",
  "https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416"
]

    after

    [
  "https://git.kernel.org/stable/c/c7956ec99ad0e173720d95de9fa788bb077809f2",
  "https://git.kernel.org/stable/c/2c3d907dd15f4e30d4c35b9f7a7a5078de6a1b1f",
  "https://git.kernel.org/stable/c/72f367417a6aee56821d0b0114cfd2b080008b63",
  "https://git.kernel.org/stable/c/19dfc37c9deefa69dc805d01d35d1f2fd7902e33",
  "https://git.kernel.org/stable/c/5787887eba0f0979a8c86d03a8e891395d5c24ad",
  "https://git.kernel.org/stable/c/01835d3a3709be508ae5209f806640336c48e395",
  "https://git.kernel.org/stable/c/6fc0c818b1cac66003e937c8a0d3bfb23fd3f130",
  "https://git.kernel.org/stable/c/23a9163cc40b4996ba1e20533b1210a1a0bee416",
  "https://git.kernel.org/stable/c/0b157166e612b70f98a332b6c7be7eac6f8e9593"
]
    Environment requirements changed

    before

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "5.10.273"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "5.15.224"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "6.1.191"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "6.6.161"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "6.12.115"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "4.7",
                "versionEndExcluding": "7.3.1"
              }
            ]
          }
        ]
      }
    ]
  }
]

    after

    [
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
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    ]
  }
]

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

Showing up to 50 most recent observed changes.