CVE-2026-99237

tracing: Hold trace_types_lock when resetting last boot data from readers

Products / packages Linux

Published 02/11/2026, 16:06:42 UTC

Severity and exploitation

Not in CISA KEV

KEV coverage does not rule out exploitation.

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

Linux · CVSS:3.1 · 7.8

Assessment vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity

high7.8

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

4 ranges

Linux version evidence

Check a product version

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

affected

32dc0042528d385d83bf458e4cf3a49c5110afea → before 92b69f6db640dadc0851762ee2e12db99f083cad

git versions

32dc0042528d385d83bf458e4cf3a49c5110afea → before d6d991afe775ab7fcf89523a2502b7ca3be56ffd

git versions

32dc0042528d385d83bf458e4cf3a49c5110afea → before 1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa

git versions

32dc0042528d385d83bf458e4cf3a49c5110afea → before 5a6bd62f09147b49b31fd19d4eba122cb5f941a1

git versions

Other versions: unaffected

Linux · Linux

Linux

6 ranges

Linux version evidence

Check a product version

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

affected

6.16

unaffected

0 → before 6.16

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

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:

tracing: Hold trace_types_lock when resetting last boot data from readers

update_last_data_if_empty() is called from tracing_open() with O_TRUNC, tracing_read_pipe() and tracing_buffers_read() without trace_types_lock. Two readers can both pass the LAST_BOOT test and free module_delta twice, and a module notifier can update module_delta while it is being freed.

Take trace_types_lock in those paths and keep the callers that already hold it on an unlocked variant.

References

4 sources

git.kernel.org/stable/c/92b69f6db640dadc0851762ee2e12db99f083cad

Source referenceLinux

git.kernel.org/stable/c/d6d991afe775ab7fcf89523a2502b7ca3be56ffd

Source referenceLinux

git.kernel.org/stable/c/1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa

Source referenceLinux

git.kernel.org/stable/c/5a6bd62f09147b49b31fd19d4eba122cb5f941a1

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-2026-99237

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): 6.16

After:

Through (inclusive):

Before: 6.18.60

Vulnerable product

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

From (inclusive): 6.16

After:

Through (inclusive):

Before: 7.2.14

Vulnerable product

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

From (inclusive): 6.16

After:

Through (inclusive):

Before: 7.3.1

Vulnerable product

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

From (inclusive): 6.16

After:

Through (inclusive):

Before: 7.4-rc1

Original applicability statements

[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.16",
            "versionEndExcluding": "6.18.60"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.16",
            "versionEndExcluding": "7.2.14"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.16",
            "versionEndExcluding": "7.3.1"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "6.16",
            "versionEndExcluding": "7.4-rc1"
          }
        ]
      }
    ]
  }
]

Contributing organizations · 1

Linux

Assigning organization

2026-11-03

Timeline

All times UTC

2 Nov 2026, 16:06
Advisory published
Publication date supplied by the source.
3 Nov 2026, 19:13
Source updated
Latest modification date supplied by the source.
3 Nov 2026, 19:50
Last imported by cve.new
Latest catalog import, not the date we first saw this advisory.

What changed

Follow changes

CVE · CVE-2026-992372026-11-03

Observed 2026-11-03T19:50:47.862Z · upstream updated 2026-11-03T19:13:04.997Z

Product or version evidence changed

before

[
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "92b69f6db640dadc0851762ee2e12db99f083cad",
        "versionType": "git"
      },
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "d6d991afe775ab7fcf89523a2502b7ca3be56ffd",
        "versionType": "git"
      },
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99237"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.16",
        "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-2026-99237"
  }
]

after

[
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "92b69f6db640dadc0851762ee2e12db99f083cad",
        "versionType": "git"
      },
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "d6d991afe775ab7fcf89523a2502b7ca3be56ffd",
        "versionType": "git"
      },
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa",
        "versionType": "git"
      },
      {
        "version": "32dc0042528d385d83bf458e4cf3a49c5110afea",
        "status": "affected",
        "lessThan": "5a6bd62f09147b49b31fd19d4eba122cb5f941a1",
        "versionType": "git"
      }
    ],
    "defaultStatus": "unaffected",
    "cpes": [],
    "source": "Linux",
    "url": "https://www.cve.org/CVERecord?id=CVE-2026-99237"
  },
  {
    "vendor": "Linux",
    "name": "Linux",
    "platforms": [],
    "versions": [
      {
        "version": "6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "status": "unaffected",
        "lessThan": "6.16",
        "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-2026-99237"
  }
]

References changed

before

[
  "https://git.kernel.org/stable/c/92b69f6db640dadc0851762ee2e12db99f083cad",
  "https://git.kernel.org/stable/c/d6d991afe775ab7fcf89523a2502b7ca3be56ffd",
  "https://git.kernel.org/stable/c/1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa"
]

after

[
  "https://git.kernel.org/stable/c/92b69f6db640dadc0851762ee2e12db99f083cad",
  "https://git.kernel.org/stable/c/d6d991afe775ab7fcf89523a2502b7ca3be56ffd",
  "https://git.kernel.org/stable/c/1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa",
  "https://git.kernel.org/stable/c/5a6bd62f09147b49b31fd19d4eba122cb5f941a1"
]

Environment requirements changed

before

[
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "7.3.1"
              }
            ]
          }
        ]
      }
    ]
  }
]

after

[
  {
    "source": "Linux",
    "statements": [
      {
        "nodes": [
          {
            "operator": "OR",
            "negate": false,
            "cpeMatch": [
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "6.18.60"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "7.2.14"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "versionEndExcluding": "7.3.1"
              },
              {
                "vulnerable": true,
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "versionStartIncluding": "6.16",
                "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.

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: No EPSS estimate available in this record.

Record identifiers

Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-99237

Enrichment coverage

NVDAvailable

Checked 02/11/2026, 16:40:39 UTC

GHSANo result

Checked 02/11/2026, 16:40:38 UTC

EUVDNo result

Checked 02/11/2026, 16:40:39 UTC

EPSSNo result

Checked 02/11/2026, 16:40:39 UTC

Additional source evidence

NVD · CVE-2026-99237

CVSS 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Checked 02/11/2026, 16:40:39 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Investigate in your agent.

tracing: Hold trace_types_lock when resetting last boot data from readers

Severity and exploitation

What this means

Attack conditions

Affected versions

Linux

affected

unaffected

unknown

Linux

affected

unaffected

unknown

What to do

Public exploit evidence

Original source description

References

Inside the record

Evidence available

Original records

Environment requirements

Timeline

Advisory published

Source updated

Last imported by cve.new

What changed