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: net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes Reject invalid `net.ipv4.tcp_reordering` values before they reach TCP socket state. The sysctl is stored as an `int` but copied into the `u32` `tp->reordering` field for new sockets, so negative writes wrap to large values. With `tcp_mtu_probing=2`, the wrapped value can overflow the `tcp_mtu_probe()` size calculation and drive the MTU probing path into an out-of-bounds read. Route `tcp_reordering` writes through `proc_dointvec_minmax()` and require it to be at least 1. Also require `tcp_max_reordering` to be at least 1 so the configured maximum cannot become negative either. When registering the table for a non-init network namespace, relocate `extra2` pointers that refer into `init_net.ipv4` so the `tcp_reordering` upper bound follows that namespace's `tcp_max_reordering`. Harden `tcp_mtu_probe()` itself by computing `size_needed` as `u64`. This keeps the send queue and window checks from being bypassed through signed integer overflow.
Засегнати продукти
- Linux Linux: 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди f0d88a4cd03affff6c08adf6c63964e235aede43; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди 27ddf4486c7dbf5bdd393fa8bef6b67179796d98; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди 782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди e81f805824a8109504fce090641b17d135b48cd1; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди 99206ce2244f8a3ed64298d0667c9055845a5dc7; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди bbae351c0f32f7c200249e4aa6561b2b419dcf69; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди a094ac95d3b69adfa1676eb9c8eae6835d4f1671; 91cc17c0e5e5ada156a8d5787a2509d263ea6bbf преди efb8763d7bbb40cff4cc55a6b62c3095a038149c
- Linux Linux: 2.6.24; преди 2.6.24; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък
Siemens: още 3 продукта, добавени от Siemens
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP, SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Вид слабост
История
- 25 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64422
- https://nvd.nist.gov/vuln/detail/CVE-2026-64422
- https://git.kernel.org/stable/c/f0d88a4cd03affff6c08adf6c63964e235aede43
- https://git.kernel.org/stable/c/27ddf4486c7dbf5bdd393fa8bef6b67179796d98
- https://git.kernel.org/stable/c/782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae
- https://git.kernel.org/stable/c/e81f805824a8109504fce090641b17d135b48cd1
- https://git.kernel.org/stable/c/99206ce2244f8a3ed64298d0667c9055845a5dc7
- https://git.kernel.org/stable/c/bbae351c0f32f7c200249e4aa6561b2b419dcf69
- https://git.kernel.org/stable/c/a094ac95d3b69adfa1676eb9c8eae6835d4f1671
- https://git.kernel.org/stable/c/efb8763d7bbb40cff4cc55a6b62c3095a038149c
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html