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/msm: RCU-free the scheduler-containing ring and VM objects Both struct msm_ringbuffer and struct msm_gem_vm embed a struct drm_gpu_scheduler. msm_ringbuffer_destroy() and the VM free callback msm_gem_vm_free() call drm_sched_fini() on the embedded scheduler and then free the containing object with plain kfree(). 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 (the submit out-fence, or a VM_BIND fence, via sync_file / drm_syncobj) keeps pointing at the embedded scheduler after the ring/VM is freed, so a later get_timeline_name() -- reachable unprivileged through SYNC_IOC_FILE_INFO -- dereferences freed slab 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 objects with kfree_rcu() instead of kfree(). Patchwork: https://patchwork.freedesktop.org/patch/750234/
Засегнати продукти
- Linux Linux: 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19 преди d81bf4581903b0cba0698cd4d1c07fc6be21754a; 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19 преди 713abac5c04ccbae67f9ac68c3921845535388e7; 1d8a5ca436ee4a28eec14cb813f790f7cdeeee19 преди 01c8d1f385f788f1bbbbb7687c4386d614281218
- Linux Linux: 5.15; преди 5.15; 6.18.54 до 6.18.*; 7.2.8 до 7.2.*; от 7.3 нататък
История
- 6 октомври 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-98180
- https://nvd.nist.gov/vuln/detail/CVE-2026-98180
- https://git.kernel.org/stable/c/d81bf4581903b0cba0698cd4d1c07fc6be21754a
- https://git.kernel.org/stable/c/713abac5c04ccbae67f9ac68c3921845535388e7
- https://git.kernel.org/stable/c/01c8d1f385f788f1bbbbb7687c4386d614281218