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.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix signededness bug in smb_direct_prepare_negotiation() smb_direct_prepare_negotiation() casts an unsigned __u32 value from sp->max_recv_size and req->preferred_send_size to a signed int before computing min_t(int, ...). A maliciously provided preferred_send_size of 0x80000000 will return as smaller than max_recv_size, and then be used to set the maximum allowed alowed receive size for the next message. By sending a second message with a large value (>1420 bytes) the attacker can then achieve a heap buffer overflow. This fix replaces min_t(int, ...) with min_t(u32)
Засегнати продукти
- Linux Linux: 0626e6641f6b467447c81dd7678a69c66f7746cf преди 1c268fd2f59dc9ccb2c2a7d1f439b232dbe1c06c; 0626e6641f6b467447c81dd7678a69c66f7746cf преди 56eab82fa6fb5ca024b0514e249d40d9b23ee5a7; 0626e6641f6b467447c81dd7678a69c66f7746cf преди a110dbe928561d440e9e117d17331139a0bedace; 0626e6641f6b467447c81dd7678a69c66f7746cf преди ceae058eb707ddd0d68f0872f9d9f23b7c30c37b; 0626e6641f6b467447c81dd7678a69c66f7746cf преди 55abc475d096da4a5356b6efb0cfdc6156bc1550; 0626e6641f6b467447c81dd7678a69c66f7746cf преди 6b4f875aac344cdd52a1f34cc70ed2f874a65757
- Linux Linux: 5.15; преди 5.15; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.114 до 6.12.*; 6.18.16 до 6.18.*; 6.19.6 до 6.19.*; от 7.0 нататък
История
- 6 май 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-43185
- https://nvd.nist.gov/vuln/detail/CVE-2026-43185
- https://git.kernel.org/stable/c/1c268fd2f59dc9ccb2c2a7d1f439b232dbe1c06c
- https://git.kernel.org/stable/c/56eab82fa6fb5ca024b0514e249d40d9b23ee5a7
- https://git.kernel.org/stable/c/a110dbe928561d440e9e117d17331139a0bedace
- https://git.kernel.org/stable/c/ceae058eb707ddd0d68f0872f9d9f23b7c30c37b
- https://git.kernel.org/stable/c/55abc475d096da4a5356b6efb0cfdc6156bc1550
- https://git.kernel.org/stable/c/6b4f875aac344cdd52a1f34cc70ed2f874a65757