Vulnerability-Lookup

GHSA-CM38-GCMC-3RXP

Vulnerability from github – Published: 2026-01-28 15:31 – Updated: 2026-01-28 15:31

Details

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

perf: Ensure swevent hrtimer is properly destroyed

With the change to hrtimer_try_to_cancel() in perf_swevent_cancel_hrtimer() it appears possible for the hrtimer to still be active by the time the event gets freed.

Make sure the event does a full hrtimer_cancel() on the free path by installing a perf_event::destroy handler.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23014"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-28T15:16:17Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Ensure swevent hrtimer is properly destroyed\n\nWith the change to hrtimer_try_to_cancel() in\nperf_swevent_cancel_hrtimer() it appears possible for the hrtimer to\nstill be active by the time the event gets freed.\n\nMake sure the event does a full hrtimer_cancel() on the free path by\ninstalling a perf_event::destroy handler.",
  "id": "GHSA-cm38-gcmc-3rxp",
  "modified": "2026-01-28T15:31:31Z",
  "published": "2026-01-28T15:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23014"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/deee9dfb111ab00f9dfd46c0c7e36656b80f5235"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff5860f5088e9076ebcccf05a6ca709d5935cfa9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23014 (GCVE-0-2026-23014)

Vulnerability from cvelistv5 – Published: 2026-01-28 14:24 – Updated: 2026-01-28 14:24

Title

perf: Ensure swevent hrtimer is properly destroyed

Summary

In the Linux kernel, the following vulnerability has been resolved: perf: Ensure swevent hrtimer is properly destroyed With the change to hrtimer_try_to_cancel() in perf_swevent_cancel_hrtimer() it appears possible for the hrtimer to still be active by the time the event gets freed. Make sure the event does a full hrtimer_cancel() on the free path by installing a perf_event::destroy handler.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/deee9dfb111ab00f9…
	https://git.kernel.org/stable/c/ff5860f5088e9076e…

Impacted products

Vendor

Product

Version

Linux

Affected: eb3182ef0405ff2f6668fd3e5ff9883f60ce8801 , < deee9dfb111ab00f9dfd46c0c7e36656b80f5235 (git)
Affected: eb3182ef0405ff2f6668fd3e5ff9883f60ce8801 , < ff5860f5088e9076ebcccf05a6ca709d5935cfa9 (git)
Affected: 6b8c512811644cf2f5eaf6f44e928683c54127f0 (git)

Linux

Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc5 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/events/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "deee9dfb111ab00f9dfd46c0c7e36656b80f5235",
              "status": "affected",
              "version": "eb3182ef0405ff2f6668fd3e5ff9883f60ce8801",
              "versionType": "git"
            },
            {
              "lessThan": "ff5860f5088e9076ebcccf05a6ca709d5935cfa9",
              "status": "affected",
              "version": "eb3182ef0405ff2f6668fd3e5ff9883f60ce8801",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b8c512811644cf2f5eaf6f44e928683c54127f0",
              "versionType": "git"
            }
          ]
        },
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.6",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
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                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.17.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Ensure swevent hrtimer is properly destroyed\n\nWith the change to hrtimer_try_to_cancel() in\nperf_swevent_cancel_hrtimer() it appears possible for the hrtimer to\nstill be active by the time the event gets freed.\n\nMake sure the event does a full hrtimer_cancel() on the free path by\ninstalling a perf_event::destroy handler."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-28T14:24:44.189Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/deee9dfb111ab00f9dfd46c0c7e36656b80f5235"
        },
        {
          "url": "https://git.kernel.org/stable/c/ff5860f5088e9076ebcccf05a6ca709d5935cfa9"
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      ],
      "title": "perf: Ensure swevent hrtimer is properly destroyed",
      "x_generator": {
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23014",
    "datePublished": "2026-01-28T14:24:44.189Z",
    "dateReserved": "2026-01-13T15:37:45.940Z",
    "dateUpdated": "2026-01-28T14:24:44.189Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CM38-GCMC-3RXP

CVE-2026-23014 (GCVE-0-2026-23014)

Tags

Sightings

Nomenclature