CVEvulnerability

CVE-2026-43109

5.5 MEDIUM Published 2026-05-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2026-05-06
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

In the Linux kernel, the following vulnerability has been resolved: x86: shadow stacks: proper error handling for mmap lock 김영민 reports that shstk_pop_sigframe() doesn't check for errors from mmap_read_lock_killable(), which is a silly oversight, and also shows that we haven't marked those functions with "__must_check", which would have immediately caught it. So let's fix both issues.

Affected configurations

• linux linux kernel (>= 6.6 < 6.18.24) • linux linux kernel (>= 6.19 < 6.19.14) • linux linux kernel 7.0

References