CVSS
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Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: tcp: fix use-after-free in do_tcp_getsockopt(TCP_CC_INFO) do_tcp_getsockopt() reads icsk->icsk_ca_ops and dereferences the get_info function pointer without rcu_read_lock(). With BPF struct_ops congestion control, ca_ops can point to dynamically allocated memory that is freed concurrently, resulting in a use-after-free when the kernel dereferences or calls through the stale pointer. BUG: KASAN: slab-use-after-free in do_tcp_getsockopt+0x2037/0x23e0 Read of size 8 at addr ffff888013701258 by task exploit/149 do_tcp_getsockopt+0x2037/0x23e0 (net/ipv4/tcp.c:4564) tcp_getsockopt+0x91/0xf0 __sys_getsockopt+0xf7/0x170 Fix this by wrapping the ca_ops load and get_info call within rcu_read_lock()/rcu_read_unlock(), and using READ_ONCE() to load the icsk_ca_ops pointer.
Засегнати продукти
- Linux Linux: 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 7c312f17917455eedcea29735fa302ebb93cb9b9; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 66b831b427301a9c3e485564009d476631413103; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди a8b024cbf62b497062c86995737fc303e4cc384e; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 8d5fc9e6dc09174d0da6e59678eb8e01a890cbd3; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди e057d201640eebb8ed47ec924872c41570a3bd28; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 86814e5370068ec2bf0caa6e6d55c3e5bfc6c324; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 39aa489e85752f9de214edb0f85e4d578e57af29; 0baf26b0fcd74bbfcef53c5d5e8bad2b99c8d0d2 преди 385e474086c2e7e29e2dded690be40dc273e20ee
- Linux Linux: 5.6; преди 5.6; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък
История
- 28 октомври 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-99138
- https://nvd.nist.gov/vuln/detail/CVE-2026-99138
- https://git.kernel.org/stable/c/7c312f17917455eedcea29735fa302ebb93cb9b9
- https://git.kernel.org/stable/c/66b831b427301a9c3e485564009d476631413103
- https://git.kernel.org/stable/c/a8b024cbf62b497062c86995737fc303e4cc384e
- https://git.kernel.org/stable/c/8d5fc9e6dc09174d0da6e59678eb8e01a890cbd3
- https://git.kernel.org/stable/c/e057d201640eebb8ed47ec924872c41570a3bd28
- https://git.kernel.org/stable/c/86814e5370068ec2bf0caa6e6d55c3e5bfc6c324
- https://git.kernel.org/stable/c/39aa489e85752f9de214edb0f85e4d578e57af29
- https://git.kernel.org/stable/c/385e474086c2e7e29e2dded690be40dc273e20ee