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
libfuse is the reference implementation of the Linux FUSE. From version 3.18.0 to before version 3.18.2, a use-after-free vulnerability in the io_uring subsystem of libfuse allows a local attacker to crash FUSE filesystem processes and potentially execute arbitrary code. When io_uring thread creation fails due to resource exhaustion (e.g., cgroup pids.max), fuse_uring_start() frees the ring pool structure but stores the dangling pointer in the session state, leading to a use-after-free when the session shuts down. The trigger is reliable in containerized environments where cgroup pids.max limits naturally constrain thread creation. This issue has been patched in version 3.18.2.
Засегнати продукти
- libfuse libfuse: >= 3.18.0, < 3.18.2
- Red Hat Red Hat Enterprise Linux 7
- Red Hat Red Hat Enterprise Linux 8
Вид слабост
История
- 20 март 2026 Публикувано
Други уязвимости в libfuse libfuse
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-33150
- https://nvd.nist.gov/vuln/detail/CVE-2026-33150
- https://github.com/libfuse/libfuse/security/advisories/GHSA-qxv7-xrc2-qmfx
- https://github.com/libfuse/libfuse/commit/49fcd891a58f622c098e2ca67d66086f7b213836
- https://github.com/libfuse/libfuse/releases/tag/fuse-3.18.2
- https://access.redhat.com/security/cve/CVE-2026-33150
- https://bugzilla.redhat.com/show_bug.cgi?id=2449771
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33150.json