Vulnerability-Lookup

GHSA-X3M9-V7VH-X62J

Vulnerability from github – Published: 2026-03-20 09:32 – Updated: 2026-03-25 12:30

Details

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

perf: Fix __perf_event_overflow() vs perf_remove_from_context() race

Make sure that __perf_event_overflow() runs with IRQs disabled for all possible callchains. Specifically the software events can end up running it with only preemption disabled.

This opens up a race vs perf_event_exit_event() and friends that will go and free various things the overflow path expects to be present, like the BPF program.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23271"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-20T09:16:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program.",
  "id": "GHSA-x3m9-v7vh-x62j",
  "modified": "2026-03-25T12:30:20Z",
  "published": "2026-03-20T09:32:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23271"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23271 (GCVE-0-2026-23271)

Vulnerability from cvelistv5 – Published: 2026-03-20 08:08 – Updated: 2026-03-25 10:20

Title

perf: Fix __perf_event_overflow() vs perf_remove_from_context() race

Summary

In the Linux kernel, the following vulnerability has been resolved: perf: Fix __perf_event_overflow() vs perf_remove_from_context() race Make sure that __perf_event_overflow() runs with IRQs disabled for all possible callchains. Specifically the software events can end up running it with only preemption disabled. This opens up a race vs perf_event_exit_event() and friends that will go and free various things the overflow path expects to be present, like the BPF program.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/4df1a45819e50993c…
	https://git.kernel.org/stable/c/4f8d5812337871227…
	https://git.kernel.org/stable/c/5c48fdc4b4623533d…
	https://git.kernel.org/stable/c/3f89b61dd504c5b67…
	https://git.kernel.org/stable/c/bb190628fe5f2a73b…
	https://git.kernel.org/stable/c/c9bc1753b3cc41d0e…

Impacted products

Vendor

Product

Version

Linux

Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 4df1a45819e50993cb351682a6ae8e7ed2d233a0 (git)
Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 4f8d5812337871227bb2c98669a87c306a2f86ef (git)
Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 5c48fdc4b4623533d86e279f51531a7ba212eb87 (git)
Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < 3f89b61dd504c5b6711de9759e053b082f9abf12 (git)
Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < bb190628fe5f2a73ba762a9972ba16c5e895f73e (git)
Affected: 592903cdcbf606a838056bae6d03fc557806c914 , < c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae (git)

Linux

Affected: 2.6.31
Unaffected: 0 , < 2.6.31 (semver)
Unaffected: 6.1.167 , ≤ 6.1.* (semver)
Unaffected: 6.6.130 , ≤ 6.6.* (semver)
Unaffected: 6.12.77 , ≤ 6.12.* (semver)
Unaffected: 6.18.17 , ≤ 6.18.* (semver)
Unaffected: 6.19.7 , ≤ 6.19.* (semver)
Unaffected: 7.0-rc2 , ≤ * (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": "4df1a45819e50993cb351682a6ae8e7ed2d233a0",
              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            },
            {
              "lessThan": "5c48fdc4b4623533d86e279f51531a7ba212eb87",
              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            },
            {
              "lessThan": "3f89b61dd504c5b6711de9759e053b082f9abf12",
              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            },
            {
              "lessThan": "bb190628fe5f2a73ba762a9972ba16c5e895f73e",
              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            },
            {
              "lessThan": "c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae",
              "status": "affected",
              "version": "592903cdcbf606a838056bae6d03fc557806c914",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/events/core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.31"
            },
            {
              "lessThan": "2.6.31",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.167",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.17",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.7",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0-rc2",
                  "versionStartIncluding": "2.6.31",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix __perf_event_overflow() vs perf_remove_from_context() race\n\nMake sure that __perf_event_overflow() runs with IRQs disabled for all\npossible callchains. Specifically the software events can end up running\nit with only preemption disabled.\n\nThis opens up a race vs perf_event_exit_event() and friends that will go\nand free various things the overflow path expects to be present, like\nthe BPF program."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-25T10:20:44.470Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12"
        },
        {
          "url": "https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae"
        }
      ],
      "title": "perf: Fix __perf_event_overflow() vs perf_remove_from_context() race",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23271",
    "datePublished": "2026-03-20T08:08:46.711Z",
    "dateReserved": "2026-01-13T15:37:45.991Z",
    "dateUpdated": "2026-03-25T10:20:44.470Z",
    "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-X3M9-V7VH-X62J

CVE-2026-23271 (GCVE-0-2026-23271)

Tags

Sightings

Nomenclature