CVEvulnerability

CVE-2026-22987

5.5 MEDIUM Published 2026-01-23 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-01-23
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
Weaknesses
CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy syzbot reported a crash in tc_act_in_hw() during netns teardown where tcf_idrinfo_destroy() passed an ERR_PTR(-EBUSY) value as a tc_action pointer, leading to an invalid dereference. Guard against ERR_PTR entries when iterating the action IDR so teardown does not call tc_act_in_hw() on an error pointer.

Affected configurations

• linux linux kernel (>= 6.17 < 6.18.6) • linux linux kernel 6.19

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References