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
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – 65dae8b34f0810f3fa9f77c4c63650cd20820693
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – a6d44f477000c6352de6b05e9e276e62083e5fbf
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – 3e6c08dd97dcd22a00aee469e0adfa819071d80e
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – 5a9f29a3e076b637d2234093e57989cf755ded5b
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – 9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3
- Linux / Linux894c9ef9780c5cf2f143415e867ee39a33ecb75d – c8c4a2972f83c8b68ff03b43cecdb898939ff851
- Linux / Linux2b1207801c393a5e9af2fbac2dd8b0377d8ae63a – 2b1207801c393a5e9af2fbac2dd8b0377d8ae63a
- Linux / Linux0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14 – 0685dfa0a2ff7635c0b64f7b7f0fafbf1c3e0c14
- Linux / Linux3f4d3d010477365ee1aefedc3ad52563740b777e – 3f4d3d010477365ee1aefedc3ad52563740b777e
- Linux / Linux4.19.202 – 4.20
- Linux / Linux5.4.22 – 5.5
- Linux / Linux5.5.6 – 5.6
- Linux / Linux5.6 – 5.6
- Linux / Linux0 – 5.6
- Linux / Linux6.1.175 – 6.1.*
- Linux / Linux6.6.141 – 6.6.*
- Linux / Linux6.12.91 – 6.12.*
- Linux / Linux6.18.33 – 6.18.*
- Linux / Linux7.0.10 – 7.0.*
- Linux / Linux7.1 – *
References
- MISChttps://git.kernel.org/stable/c/65dae8b34f0810f3fa9f77c4c63650cd20820693
- MISChttps://git.kernel.org/stable/c/a6d44f477000c6352de6b05e9e276e62083e5fbf
- MISChttps://git.kernel.org/stable/c/3e6c08dd97dcd22a00aee469e0adfa819071d80e
- MISChttps://git.kernel.org/stable/c/5a9f29a3e076b637d2234093e57989cf755ded5b
- MISChttps://git.kernel.org/stable/c/9afe53f14a2aae8c4beb30e5ea51641a34f1a3d3
- MISChttps://git.kernel.org/stable/c/c8c4a2972f83c8b68ff03b43cecdb898939ff851