CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: libceph: refresh auth->authorizer_buf{,_len} after authorizer update ceph_x_create_authorizer() caches au->buf->vec.iov_base and au->buf->vec.iov_len in struct ceph_auth_handshake. These cached values are then used by the messenger connect code when sending the authorizer. ceph_x_update_authorizer() can rebuild the authorizer when a newer service ticket is available. If the rebuilt authorizer no longer fits in the existing buffer, ceph_x_build_authorizer() drops its reference to au->buf and allocates a new one. If this is the final reference, ceph_buffer_put() frees the old ceph_buffer and its vec.iov_base, but auth->authorizer_buf still points at that freed memory. A subsequent msgr1 reconnect can therefore queue the stale pointer and trigger a KASAN slab-use-after-free in _copy_from_iter() while tcp_sendmsg() copies the authorizer. Refresh auth->authorizer_buf and auth->authorizer_buf_len after a successful authorizer rebuild so the messenger sends the current buffer.
Засегнати продукти
- Linux Linux: 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 2334e9997308305ee4fd508fdfe6086c4150ed60; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 79a273df64238a4ade8b709689a78589f755b8ef; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 26f814187abceee90dbb29a02133adb4786fbb13; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 9d37aec9ffe4e743dabc3f84502e9723e17a30d4; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 75e82e8944ac1efe9fdb88bd2f14d9a031282bdf; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 0060ec912292a550198d8d18ac95b433c92a7091; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 5ecfcd5c05866f185357700b81b461dae4f5ebb2; 0bed9b5c523d577378b6f83eab5835fe30c27208 преди 937d61f86d377a3aa578adae7a3dfcecdddf9d89; 29c65a277a64645af853e8c9a9b3dda0ddc421e0; d2c7223497cf8228416c70e3f4238ddd6c5bdf3c; 3.4.50 преди 3.5; 3.9.7 преди 3.10
- Linux Linux: 3.10; преди 3.10; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък
Вид слабост
История
- 10 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-68156
- https://nvd.nist.gov/vuln/detail/CVE-2026-68156
- https://git.kernel.org/stable/c/2334e9997308305ee4fd508fdfe6086c4150ed60
- https://git.kernel.org/stable/c/79a273df64238a4ade8b709689a78589f755b8ef
- https://git.kernel.org/stable/c/26f814187abceee90dbb29a02133adb4786fbb13
- https://git.kernel.org/stable/c/9d37aec9ffe4e743dabc3f84502e9723e17a30d4
- https://git.kernel.org/stable/c/75e82e8944ac1efe9fdb88bd2f14d9a031282bdf
- https://git.kernel.org/stable/c/0060ec912292a550198d8d18ac95b433c92a7091
- https://git.kernel.org/stable/c/5ecfcd5c05866f185357700b81b461dae4f5ebb2
- https://git.kernel.org/stable/c/937d61f86d377a3aa578adae7a3dfcecdddf9d89