CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: bpf: Invalidate RCU pointers after final spin unlock In a sleepable BPF program, a spin lock can provide the only RCU protection for a kptr. The final bpf_spin_unlock() ends that protection, but the verifier leaves the pointer valid. Another CPU can then free the object before the pointer is used. A capability-limited runtime PoC triggered a task_struct use-after-free in __bpf_get_task_stack(). Record whether the program is in an RCU-protected context before releasing the lock. Invalidate RCU-protected pointers only when the unlock leaves the final such context. This preserves valid pointers in non-sleepable programs and inside an explicit RCU read-side section.
Засегнати продукти
- Linux Linux: 5861d1e8dbc4e1a03ebffb96ac041026cdd34c07 преди f81972b235f3ebfa40bdce8bcfee3f242fb24065; 5861d1e8dbc4e1a03ebffb96ac041026cdd34c07 преди 7ae71629357d0a6d0bdadb929c7b296d5b7e61c2; 5861d1e8dbc4e1a03ebffb96ac041026cdd34c07 преди 180c7000712db77063b3a26f4c97e7dd9038f449
- Linux Linux: 6.6; преди 6.6; 6.18.57 до 6.18.*; 7.2.6 до 7.2.*; от 7.3 нататък
История
- 17 септември 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-90317
- https://nvd.nist.gov/vuln/detail/CVE-2026-90317
- https://git.kernel.org/stable/c/f81972b235f3ebfa40bdce8bcfee3f242fb24065
- https://git.kernel.org/stable/c/7ae71629357d0a6d0bdadb929c7b296d5b7e61c2
- https://git.kernel.org/stable/c/180c7000712db77063b3a26f4c97e7dd9038f449