CVE-2026-64406: Linux, грешка в паметта

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in bt_accept_dequeue() bt_accept_get() takes a temporary reference before dropping the accept queue lock. bt_accept_dequeue() currently drops that reference before bt_accept_unlink(), leaving only the queue reference. bt_accept_unlink() drops the queue reference. The subsequent sock_hold() therefore accesses freed memory if it was the final reference, as observed by KASAN during listening L2CAP socket cleanup. Retain the temporary queue-walk reference through unlink and hand it to the caller on success. Drop it explicitly on the closed and not-yet-connected paths.

Засегнати продукти

• Linux Linux: 751de6ec671fe75ad9cf65a0638d2a06b6a5984d преди c0577c55219be42b6ea2ea8db11e85bfab6f4e8d; 407217734835d21d4e0105ebf347860dc1806f88 преди 96ad400d5132eb333f28f6f1e2d58f0728ca9547; 7eebd4c2c86f573af87ff165d08a83432eb0b919 преди 0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0; 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57 преди c66a95e60b65d876a927123b0ed36bd6177d9ca6; 87c543e2f78d0871f271df92dab98901bbd5b6f5 преди 6303ed4bbe0095f4cc195225479bf506e010d1db; added1213395071470a900cc845a042fb51882a6 преди 26168db1ce5a9766cde021b18e590a101c056614; ab1513597c6cf17cd1ad2a21e3b045421b48e022 преди 50c662bdcd51b03033a0abed6716bfd377ba1049; ab1513597c6cf17cd1ad2a21e3b045421b48e022 преди 4bd0b274054f2679f28b70222b607bb0afc3ab9a; a5ca86a6097a8b030ca3226cd300b17ed330f966; 5.10.259 преди 5.10.261; 5.15.210 преди 5.15.212; 6.1.175 преди 6.1.178; 6.6.142 преди 6.6.145; 6.12.92 преди 6.12.96; 6.18.34 преди 6.18.39; 7.0.11 преди 7.1
• Linux Linux: 7.1; преди 7.1; 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

Вид слабост

• CWE-416 Използване на памет след освобождаване (Use-After-Free)

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-2026-64406
• https://nvd.nist.gov/vuln/detail/CVE-2026-64406
• https://git.kernel.org/stable/c/c0577c55219be42b6ea2ea8db11e85bfab6f4e8d
• https://git.kernel.org/stable/c/96ad400d5132eb333f28f6f1e2d58f0728ca9547
• https://git.kernel.org/stable/c/0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0
• https://git.kernel.org/stable/c/c66a95e60b65d876a927123b0ed36bd6177d9ca6
• https://git.kernel.org/stable/c/6303ed4bbe0095f4cc195225479bf506e010d1db
• https://git.kernel.org/stable/c/26168db1ce5a9766cde021b18e590a101c056614
• https://git.kernel.org/stable/c/50c662bdcd51b03033a0abed6716bfd377ba1049
• https://git.kernel.org/stable/c/4bd0b274054f2679f28b70222b607bb0afc3ab9a