CVE-2026-53314
N/A
N/A
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 65dae8b34f0810f3fa9f77c4c63650cd20820693 | affected |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < a6d44f477000c6352de6b05e9e276e62083e5fbf | affected |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 3e6c08dd97dcd22a00aee469e0adfa819071d80e | affected |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 5a9f29a3e076b637d2234093e57989cf755ded5b | affected |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3 | affected |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < c8c4a2972f83c8b68ff03b43cecdb898939ff851 | affected |
| Linux | Linux | 2b1207801c393a5e9af2fbac2dd8b0377d8ae63a | affected |
| Linux | Linux | 0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14 | affected |
| Linux | Linux | 3f4d3d010477365ee1aefedc3ad52563740b777e | affected |
| Linux | Linux | 4.19.202 < 4.20 | affected |
| Linux | Linux | 5.4.22 < 5.5 | affected |
| Linux | Linux | 5.5.6 < 5.6 | affected |
| Linux | Linux | 5.6 | affected |
| Linux | Linux | 0 < 5.6 | unaffected |
| Linux | Linux | 6.1.175 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.141 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.91 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.33 <= 6.18.* | unaffected |
| Linux | Linux | 7.0.10 <= 7.0.* | unaffected |
| Linux | Linux | 7.1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693
- https://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf
- https://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e
- https://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b
- https://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3
- https://git.kernel.org/stable/c/c8c4a2972f83c8b68ff03b43cecdb898939ff851
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.