In the Linux kernel, the following vulnerability has been resolved:
cpu: hotplug: Preserve per instance callback errors
cpuhp_invoke_callback() unwinds earlier callbacks for the same
hotplug state when one instance fails. The rollback path currently
reuses ret, so a successful rollback can hide the original error and
make the failed transition look successful.
Keep the rollback result separate from the original error.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
References 8
https://git.kernel.org/stable/c/673db10729fb121ea1b16fe57791a0cb9eac1eb5
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/77d4fa8a3ea1c3e8b996ac35e59aee9e77389905
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7a68257b90d8a9b6d605abc99469ded45ecba63b
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/95232281512b15338549171ed9a2acf21f946ffb
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9f7dc355f62c011e4afe8286cf71130d4bfb9d80
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ef39758637cc5b603fb05b625c45a98aa306e338
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f77117530fc3f5932ffb107182a6dd34006be9b6
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/fe9c8d641f6991614d1229a3ffd3e33b879bba9c
416baaa9-dc9f-4396-8d5f-8c081fb06d67