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: drm/nouveau: RCU-free the scheduler-containing nouveau_sched struct nouveau_sched embeds a struct drm_gpu_scheduler (base). nouveau_sched_destroy() calls nouveau_sched_fini() (which does drm_sched_fini(&sched->base)) and then frees the object with plain kfree(sched). drm_sched_fence_get_timeline_name() returns fence->sched->name, and the scheduler fence keeps a .release callback so it is not ops-detached on signalling. A finished fence exported to userspace via drm_syncobj / sync_file therefore keeps pointing at &sched->base after nouveau_sched_destroy(), and a later get_timeline_name() -- reachable unprivileged through SYNC_IOC_FILE_INFO -- dereferences freed memory (KASAN slab-use-after-free read). Per the dma-fence lifetime contract the exporter must keep the data backing a signalled fence alive for an RCU grace period. Free the scheduler-containing object with kfree_rcu() instead of kfree().
Засегнати продукти
- Linux Linux: 5f03a507b29e44a848f315c7240c19894dd8be4f преди 40edf5eefc3fd94592a91d6eb074d4fc6f606c75; 5f03a507b29e44a848f315c7240c19894dd8be4f преди 35151e9a8274174ccbb92e3b3ba7dc7a008dcada; 5f03a507b29e44a848f315c7240c19894dd8be4f преди cd6e11b6ebe04a0a1f1435df561acada9eadc563; 5f03a507b29e44a848f315c7240c19894dd8be4f преди f7eae6d8d768fabd6b59779ca7da79e02c74e113
- Linux Linux: 6.8; преди 6.8; 6.12.112 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък
История
- 18 октомври 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-98512
- https://nvd.nist.gov/vuln/detail/CVE-2026-98512
- https://git.kernel.org/stable/c/40edf5eefc3fd94592a91d6eb074d4fc6f606c75
- https://git.kernel.org/stable/c/35151e9a8274174ccbb92e3b3ba7dc7a008dcada
- https://git.kernel.org/stable/c/cd6e11b6ebe04a0a1f1435df561acada9eadc563
- https://git.kernel.org/stable/c/f7eae6d8d768fabd6b59779ca7da79e02c74e113