CVE-2023-23005

Summary

In the Linux kernel before 6.2, mm/memory-tiers.c misinterprets the alloc_memory_type return value (expects it to be NULL in the error case, whereas it is actually an error pointer). NOTE: this is disputed by third parties because there are no realistic cases in which a user can cause the alloc_memory_type error case to be reached.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2 ↗

Additional information

• NVD record
• https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2Patch
• https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2Patch
• https://github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5eePatch