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.
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: apparmor: mediate the implicit connect of TCP fast open sendmsg sendmsg()/sendto() with MSG_FASTOPEN is a combination of connect(2) and write(2): it opens the connection in the SYN. apparmor_socket_sendmsg() only checks AA_MAY_SEND, so a profile that grants send but denies connect lets a confined task open an outbound TCP/MPTCP connection that connect(2) would have refused, bypassing connect mediation. Mediate the implicit connect when MSG_FASTOPEN is set and a destination is supplied. Add it to apparmor_socket_sendmsg() (not the shared aa_sock_msg_perm() helper, which recvmsg also uses) and call aa_sk_perm() directly, mirroring the selinux and tomoyo fixes. sk_is_tcp() does not cover MPTCP fast open, so the SOCK_STREAM/IPPROTO_MPTCP arm is explicit.
Засегнати продукти
- Linux Linux: cf60af03ca4e71134206809ea892e49b92a88896 преди a16714e7cf2baa98ba2efddd5d6cbac641f4e76b; cf60af03ca4e71134206809ea892e49b92a88896 преди 20383429b56974507c465d016e5238b189f7a246; cf60af03ca4e71134206809ea892e49b92a88896 преди 7f57428ce00891d26b0f087ef754a4d820ec83aa; cf60af03ca4e71134206809ea892e49b92a88896 преди faea60deaa05c76f0772650f42eafde12bd39d93; cf60af03ca4e71134206809ea892e49b92a88896 преди 07b71c342382b854ab8030b244aeab6a7228ad7d; cf60af03ca4e71134206809ea892e49b92a88896 преди 4a69b83045d3195d5b9a9b053ad840ddb2998b4e; cf60af03ca4e71134206809ea892e49b92a88896 преди 45ebb934ea50b436ce49b2f159f090dab0d7fa28; cf60af03ca4e71134206809ea892e49b92a88896 преди 4d587cd8a72155089a627130bbd4716ec0856e21
- Linux Linux: 3.6; преди 3.6; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.177 до 6.1.*; 6.6.144 до 6.6.*; 6.12.95 до 6.12.*; 6.18.38 до 6.18.*; 7.1.3 до 7.1.*; от 7.2 нататък
История
- 19 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-63828
- https://nvd.nist.gov/vuln/detail/CVE-2026-63828
- https://git.kernel.org/stable/c/a16714e7cf2baa98ba2efddd5d6cbac641f4e76b
- https://git.kernel.org/stable/c/20383429b56974507c465d016e5238b189f7a246
- https://git.kernel.org/stable/c/7f57428ce00891d26b0f087ef754a4d820ec83aa
- https://git.kernel.org/stable/c/faea60deaa05c76f0772650f42eafde12bd39d93
- https://git.kernel.org/stable/c/07b71c342382b854ab8030b244aeab6a7228ad7d
- https://git.kernel.org/stable/c/4a69b83045d3195d5b9a9b053ad840ddb2998b4e
- https://git.kernel.org/stable/c/45ebb934ea50b436ce49b2f159f090dab0d7fa28
- https://git.kernel.org/stable/c/4d587cd8a72155089a627130bbd4716ec0856e21