Vulnerabilities > CVE-2023-23005 - NULL Pointer Dereference vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH 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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2
- https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2
- https://github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5ee
- https://github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5ee