CVE-2026-53183: Linux, отказ на услуга

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: mptcp: allow subflow rcv wnd to shrink In MPTCP connection, the `window` field in the TCP header refers to the MPTCP-level rcv_nxt and it's right edge should not move backward. Such constraint is enforced at DSS option generation time. At the same time, the TCP stack ensures independently that the TCP-level rcv wnd right's edge does not move backward. That in turn causes artificial inflating of the MPTCP rcv window when the incoming data is acked at the TCP level and is OoO in the MPTCP sequence space (or lands in the backlog). As a consequence, the incoming traffic can exceed the receiver rcvbuf size even when the sender is not misbehaving. Prevent such scenario forcibly allowing the TCP subflow to shrink the TCP-level rcv wnd regardless of the current netns setting.

Засегнати продукти

• Linux Linux: f3589be0c420a3137e5902d15705ced6a36f3f43 преди bf364b0f10b27679140699821f88af7f01e2a6e3; f3589be0c420a3137e5902d15705ced6a36f3f43 преди b1fd13074f22105deec45aa02283e322733e0c2d; f3589be0c420a3137e5902d15705ced6a36f3f43 преди aa3861f40ac32706d9e97bfac76984613e278788; f3589be0c420a3137e5902d15705ced6a36f3f43 преди 653245266913f03fcf21cbca68eed5c197a33e52; f3589be0c420a3137e5902d15705ced6a36f3f43 преди c297a4e65c50a2b807d9309b22615080faffa8f3; f3589be0c420a3137e5902d15705ced6a36f3f43 преди da23be77e1292cd611e736c3aa17da633d7ddce7
• Linux Linux: 5.19; преди 5.19; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък
• Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

Вид слабост

• CWE-400 Неконтролирано потребление на ресурси

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-53183
• https://nvd.nist.gov/vuln/detail/CVE-2026-53183
• https://git.kernel.org/stable/c/bf364b0f10b27679140699821f88af7f01e2a6e3
• https://git.kernel.org/stable/c/b1fd13074f22105deec45aa02283e322733e0c2d
• https://git.kernel.org/stable/c/aa3861f40ac32706d9e97bfac76984613e278788
• https://git.kernel.org/stable/c/653245266913f03fcf21cbca68eed5c197a33e52
• https://git.kernel.org/stable/c/c297a4e65c50a2b807d9309b22615080faffa8f3
• https://git.kernel.org/stable/c/da23be77e1292cd611e736c3aa17da633d7ddce7
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html