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.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: bpf: fix mm lifecycle in open-coded task_vma iterator The open-coded task_vma iterator reads task->mm locklessly and acquires mmap_read_trylock() but never calls mmget(). If the task exits concurrently, the mm_struct can be freed as it is not SLAB_TYPESAFE_BY_RCU, resulting in a use-after-free. Safely read task->mm with a trylock on alloc_lock and acquire an mm reference. Drop the reference via bpf_iter_mmput_async() in _destroy() and error paths. bpf_iter_mmput_async() is a local wrapper around mmput_async() with a fallback to mmput() on !CONFIG_MMU. Reject irqs-disabled contexts (including NMI) up front. Operations used by _next() and _destroy() (mmap_read_unlock, bpf_iter_mmput_async) take spinlocks with IRQs disabled (pool->lock, pi_lock). Running from NMI or from a tracepoint that fires with those locks held could deadlock. A trylock on alloc_lock is used instead of the blocking task_lock() (get_task_mm) to avoid a deadlock when a softirq BPF program iterates a task that already holds its alloc_lock on the same CPU.
Засегнати продукти
- Linux Linux: 4ac4546821584736798aaa9e97da9f6eaf689ea3 преди 239cec25a22662dbd80f57d94b38178c8be95269; 4ac4546821584736798aaa9e97da9f6eaf689ea3 преди d0862de7c866c5bd7c32531f66738c21197af888; 4ac4546821584736798aaa9e97da9f6eaf689ea3 преди 43683bb280330f3d36f0f2a3932a4867b9603e9c; 4ac4546821584736798aaa9e97da9f6eaf689ea3 преди d8e27d2d22b6e2df3a0125b8c08e9aace38c954c
- Linux Linux: 6.7; преди 6.7; 6.12.91 до 6.12.*; 6.18.33 до 6.18.*; 7.0.10 до 7.0.*; от 7.1 нататък
Red Hat: още 5 продукта, добавени от Red Hat
Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-53085
- https://nvd.nist.gov/vuln/detail/CVE-2026-53085
- https://git.kernel.org/stable/c/239cec25a22662dbd80f57d94b38178c8be95269
- https://git.kernel.org/stable/c/d0862de7c866c5bd7c32531f66738c21197af888
- https://git.kernel.org/stable/c/43683bb280330f3d36f0f2a3932a4867b9603e9c
- https://git.kernel.org/stable/c/d8e27d2d22b6e2df3a0125b8c08e9aace38c954c
- https://access.redhat.com/security/cve/CVE-2026-53085
- https://bugzilla.redhat.com/show_bug.cgi?id=2492404
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53085.json