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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-53314

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

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < 65dae8b34f0810f3fa9f77c4c63650cd20820693affected
  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < a6d44f477000c6352de6b05e9e276e62083e5fbfaffected
  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < 3e6c08dd97dcd22a00aee469e0adfa819071d80eaffected
  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < 5a9f29a3e076b637d2234093e57989cf755ded5baffected
  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < 9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3affected
  • 894c9ef9780c5cf2f143415e867ee39a33ecb75d to < c8c4a2972f83c8b68ff03b43cecdb898939ff851affected
  • 2b1207801c393a5e9af2fbac2dd8b0377d8ae63aaffected
  • 0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14affected
  • 3f4d3d010477365ee1aefedc3ad52563740b777eaffected
  • 4.19.202 to < 4.20affected
  • 5.4.22 to < 5.5affected
  • 5.5.6 to < 5.6affected

Linux Linux

Default version status: affected

  • 5.6affected
  • 0 to < 5.6unaffected
  • 6.1.175 to ≤ 6.1.*unaffected
  • 6.6.141 to ≤ 6.6.*unaffected
  • 6.12.91 to ≤ 6.12.*unaffected
  • 6.18.33 to ≤ 6.18.*unaffected
  • 7.0.10 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References