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CVE-2023-23005

Date: February 28, 2023

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.

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2023-23005
https://security-tracker.debian.org/tracker/CVE-2023-23005
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2
https://bugzilla.suse.com/show_bug.cgi?id=1208844#c2
https://github.com/torvalds/linux/commit/4a625ceee8a0ab0273534cb6b432ce6b331db5ee
https://www.mend.io/vulnerability-database/CVE-2023-23005

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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