CVE-2026-31638: Linux, грешка в паметта

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpc_input_packet_on_conn() can process a to-client packet after the current client call on the channel has already been torn down. In that case chan->call is NULL, rxrpc_try_get_call() returns NULL and there is no reference to drop. The client-side implicit-end error path does not account for that and unconditionally calls rxrpc_put_call(). This turns a protocol error path into a kernel crash instead of rejecting the packet. Only drop the call reference if one was actually acquired. Keep the existing protocol error handling unchanged.

Засегнати продукти

• Linux Linux: 5e6ef4f1017c7f844e305283bbd8875af475e2fc преди b8f66447448d6c305a51413a67ec8ed26aa7d1dd; 5e6ef4f1017c7f844e305283bbd8875af475e2fc преди 0c156aff8a2d4fa0d61db7837641975cf0e5452d; 5e6ef4f1017c7f844e305283bbd8875af475e2fc преди 8299ca146489664e3c0c90a3b8900d8335b1ede4; 5e6ef4f1017c7f844e305283bbd8875af475e2fc преди 9fb09861e2b8d1abfe2efaf260c9f1d30080ea38; 5e6ef4f1017c7f844e305283bbd8875af475e2fc преди 6331f1b24a3e85465f6454e003a3e6c22005a5c5
• Linux Linux: 6.2; преди 6.2; 6.6.135 до 6.6.*; 6.12.82 до 6.12.*; 6.18.23 до 6.18.*; 6.19.13 до 6.19.*; 7.0 до *

Вид слабост

• CWE-476 Разименуване на NULL указател

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-31638
• https://nvd.nist.gov/vuln/detail/CVE-2026-31638
• https://git.kernel.org/stable/c/b8f66447448d6c305a51413a67ec8ed26aa7d1dd
• https://git.kernel.org/stable/c/0c156aff8a2d4fa0d61db7837641975cf0e5452d
• https://git.kernel.org/stable/c/8299ca146489664e3c0c90a3b8900d8335b1ede4
• https://git.kernel.org/stable/c/9fb09861e2b8d1abfe2efaf260c9f1d30080ea38
• https://git.kernel.org/stable/c/6331f1b24a3e85465f6454e003a3e6c22005a5c5