CVE-2026-63874: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: net: mctp: usb: fix race between urb completion and rx_retry cancellation It's possible that sequencing between setting ->stopped and cancelling the rx_retry work (in ndo_stop) could leave us with an urb queued: T1: ndo_stop T2: rx_retry_work ------------ ---------------- LD: ->stopped => false ST: ->stopped <= true usb_kill_urb() mctp_usb_rx_queue() usb_submit_urb() cancel_delayed_work_sync() That urb completion can then re-schedule rx_retry_work. Strenghen the sequencing between the stop (preventing another requeue) and the cancel by updating both atomically under a new rx lock. After setting ->rx_stopped, and cancelling pending work, we know that the requeue cannot occur, so all that's left is killing any pending urb.

Засегнати продукти

• Linux Linux: 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 преди 9c46f3ee1837f6881cb99a52ffecb2760f11dc73; 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 преди d90feaa3f74bea8dafb6494631a194c70e547d94; 0791c0327a6e4e7691d6fc5ad334c215de04dcc9 преди 54665dce982689e2fd99b32e9a0dcc204fda8a51
• Linux Linux: 6.15; преди 6.15; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък

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-2026-63874
• https://nvd.nist.gov/vuln/detail/CVE-2026-63874
• https://git.kernel.org/stable/c/9c46f3ee1837f6881cb99a52ffecb2760f11dc73
• https://git.kernel.org/stable/c/d90feaa3f74bea8dafb6494631a194c70e547d94
• https://git.kernel.org/stable/c/54665dce982689e2fd99b32e9a0dcc204fda8a51