CVE-2026-53314
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-06-26
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Interaction
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
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 Software (14)
| Vendor | Product | Version |
|---|---|---|
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 65dae8b34f0810f3fa9f77c4c63650cd20820693 |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < a6d44f477000c6352de6b05e9e276e62083e5fbf |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 3e6c08dd97dcd22a00aee469e0adfa819071d80e |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 5a9f29a3e076b637d2234093e57989cf755ded5b |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < 9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3 |
| Linux | Linux | 894c9ef9780c5cf2f143415e867ee39a33ecb75d < c8c4a2972f83c8b68ff03b43cecdb898939ff851 |
| Linux | Linux | 2b1207801c393a5e9af2fbac2dd8b0377d8ae63a |
| Linux | Linux | 0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14 |
| Linux | Linux | 3f4d3d010477365ee1aefedc3ad52563740b777e |
| Linux | Linux | 4.19.202 < 4.20 |
| Linux | Linux | 5.4.22 < 5.5 |
| Linux | Linux | 5.5.6 < 5.6 |
| Linux | Linux | 5.6 |
| linux | linux_kernel | 4.19.202 – 4.20 |