Vulnerability-Lookup

GHSA-4FPM-3X7P-95XM

Vulnerability from github – Published: 2026-06-26 21:32 – Updated: 2026-07-06 21:30

Details

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

padata: Put CPU offline callback in ONLINE section to allow failure

syzbot reported the following warning:

DEAD callback error for CPU1
WARNING: kernel/cpu.c:1463 at _cpu_down+0x759/0x1020 kernel/cpu.c:1463, CPU#0: syz.0.1960/14614

at commit 4ae12d8bd9a8 ("Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux") which tglx traced to padata_cpu_dead() given it's the only sub-CPUHP_TEARDOWN_CPU callback that returns an error.

Failure isn't allowed in hotplug states before CPUHP_TEARDOWN_CPU so move the CPU offline callback to the ONLINE section where failure is possible.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53314"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-26T20:17:24Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npadata: Put CPU offline callback in ONLINE section to allow failure\n\nsyzbot reported the following warning:\n\n    DEAD callback error for CPU1\n    WARNING: kernel/cpu.c:1463 at _cpu_down+0x759/0x1020 kernel/cpu.c:1463, CPU#0: syz.0.1960/14614\n\nat commit 4ae12d8bd9a8 (\"Merge tag \u0027kbuild-fixes-7.0-2\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux\")\nwhich tglx traced to padata_cpu_dead() given it\u0027s the only\nsub-CPUHP_TEARDOWN_CPU callback that returns an error.\n\nFailure isn\u0027t allowed in hotplug states before CPUHP_TEARDOWN_CPU\nso move the CPU offline callback to the ONLINE section where failure is\npossible.",
  "id": "GHSA-4fpm-3x7p-95xm",
  "modified": "2026-07-06T21:30:26Z",
  "published": "2026-06-26T21:32:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53314"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8c4a2972f83c8b68ff03b43cecdb898939ff851"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53314 (GCVE-0-2026-53314)

Vulnerability from cvelistv5 – Published: 2026-06-26 19:41 – Updated: 2026-06-26 19:41

Title

padata: Put CPU offline callback in ONLINE section to allow failure

Summary

In the Linux kernel, the following vulnerability has been resolved: padata: Put CPU offline callback in ONLINE section to allow failure syzbot reported the following warning: DEAD callback error for CPU1 WARNING: kernel/cpu.c:1463 at _cpu_down+0x759/0x1020 kernel/cpu.c:1463, CPU#0: syz.0.1960/14614 at commit 4ae12d8bd9a8 ("Merge tag 'kbuild-fixes-7.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux") which tglx traced to padata_cpu_dead() given it's the only sub-CPUHP_TEARDOWN_CPU callback that returns an error. Failure isn't allowed in hotplug states before CPUHP_TEARDOWN_CPU so move the CPU offline callback to the ONLINE section where failure is possible.

Severity

No CVSS data available.

Assigner

Linux

References

6 references

URL	Tags
https://git.kernel.org/stable/c/65dae8b34f0810f3f…
https://git.kernel.org/stable/c/a6d44f477000c6352…
https://git.kernel.org/stable/c/3e6c08dd97dcd22a0…
https://git.kernel.org/stable/c/5a9f29a3e076b637d…
https://git.kernel.org/stable/c/9afe53f14a2aae8c4…
https://git.kernel.org/stable/c/c8c4a2972f83c8b68…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < 65dae8b34f0810f3fa9f77c4c63650cd20820693 (git) Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < a6d44f477000c6352de6b05e9e276e62083e5fbf (git) Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < 3e6c08dd97dcd22a00aee469e0adfa819071d80e (git) Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < 5a9f29a3e076b637d2234093e57989cf755ded5b (git) Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < 9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3 (git) Affected: 894c9ef9780c5cf2f143415e867ee39a33ecb75d , < c8c4a2972f83c8b68ff03b43cecdb898939ff851 (git) Affected: 2b1207801c393a5e9af2fbac2dd8b0377d8ae63a (git) Affected: 0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14 (git) Affected: 3f4d3d010477365ee1aefedc3ad52563740b777e (git) Affected: 4.19.202 , < 4.20 (semver) Affected: 5.4.22 , < 5.5 (semver) Affected: 5.5.6 , < 5.6 (semver)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
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          "product": "Linux",
          "programFiles": [
            "include/linux/cpuhotplug.h",
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          "vendor": "Linux",
          "versions": [
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              "versionType": "semver"
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              "status": "affected",
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          ],
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          "vendor": "Linux",
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              "version": "5.6"
            },
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              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
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      "title": "padata: Put CPU offline callback in ONLINE section to allow failure",
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}

Sightings

Author	Source	Type	Date	Other

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-4FPM-3X7P-95XM

CVE-2026-53314 (GCVE-0-2026-53314)

Tags

Sightings

Nomenclature