PT-2026-4491 · Linux+2 · Linux Kernel+2
Published
2026-01-01
·
Updated
2026-05-26
·
CVE-2026-22991
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The
free choose arg map() function may dereference a NULL pointer if its caller fails after a partial allocation. Specifically, in the decode choose args() function, if the allocation of arg map->args fails, execution jumps to a fail label, and free choose arg map() is called. Because arg map->size is updated to a non-zero value before memory allocation, free choose arg map() iterates over arg map->args and dereferences a NULL pointer. The issue is addressed by adding checks for pointers before iterating.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu