CVE-2026-22987 - net/sched: act_api: avoid dereferencing ERR_PTR in tcf_idrinfo_destroy

CVE ID : CVE-2026-22987 Published : Jan. 23, 2026, 3:24 p.m. | 1 hour, 5 minutes ago 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. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...