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: futex: Drop CLONE_THREAD requirement for private default hash alloc Currently need_futex_hash_allocate_default() depends on strict pthread semantics, abusing CLONE_THREAD. This breaks the non-concurrency assumptions when doing the mm->futex_ref pcpu allocations, leading to bugs[0] when sharing the mm in other ways; ie: BUG: KASAN: slab-use-after-free in futex_hash_put ... where the +1 bias can end up on a percpu counter that mm->futex_ref no longer points at. Loosen the check to cover any CLONE_VM clone, except vfork(). Excluding vfork keeps the existing paths untouched (no overhead), and we can't race in the first place: either the parent is suspended and the child runs alone, or mm->futex_ref is already allocated from an earlier CLONE_VM.
Засегнати продукти
- Linux Linux: d9b05321e21e4b218de4ce8a590bf375f58b6346 преди 1dcd36420af2da5bd59306dba9caf78e3d248b1d; d9b05321e21e4b218de4ce8a590bf375f58b6346 преди 974ac49a9a068b0591a59f65c63eb06579a13091; d9b05321e21e4b218de4ce8a590bf375f58b6346 преди ee9dce44362b2d8132c32964656ab6dff7dfbc6a
- Linux Linux: 6.17; преди 6.17; 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 9, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8
Вид слабост
История
- 24 юни 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-52973
- https://nvd.nist.gov/vuln/detail/CVE-2026-52973
- https://git.kernel.org/stable/c/1dcd36420af2da5bd59306dba9caf78e3d248b1d
- https://git.kernel.org/stable/c/974ac49a9a068b0591a59f65c63eb06579a13091
- https://git.kernel.org/stable/c/ee9dce44362b2d8132c32964656ab6dff7dfbc6a
- https://access.redhat.com/security/cve/CVE-2026-52973
- https://bugzilla.redhat.com/show_bug.cgi?id=2492413
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52973.json
- https://access.redhat.com/errata/RHSA-2026:45114
- https://access.redhat.com/errata/RHSA-2026:47040
- https://access.redhat.com/errata/RHSA-2026:62642
- https://access.redhat.com/errata/RHSA-2026:62640