Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 751de6ec671fe75ad9cf65a0638d2a06b6a5984d before c0577c55219be42b6ea2ea8db11e85bfab6f4e8d; affected 407217734835d21d4e0105ebf347860dc1806f88 before 96ad400d5132eb333f28f6f1e2d58f0728ca9547; affected 7eebd4c2c86f573af87ff165d08a83432eb0b919 before 0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0; affected 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57 before c66a95e60b65d876a927123b0ed36bd6177d9ca6; affected 87c543e2f78d0871f271df92dab98901bbd5b6f5 before 6303ed4bbe0095f4cc195225479bf506e010d1db; affected added1213395071470a900cc845a042fb51882a6 before 26168db1ce5a9766cde021b18e590a101c056614; affected ab1513597c6cf17cd1ad2a21e3b045421b48e022 before 50c662bdcd51b03033a0abed6716bfd377ba1049; affected ab1513597c6cf17cd1ad2a21e3b045421b48e022 before 4bd0b274054f2679f28b70222b607bb0afc3ab9a; affected a5ca86a6097a8b030ca3226cd300b17ed330f966; affected 5.10.259 before 5.10.261; affected 5.15.210 before 5.15.212; affected 6.1.175 before 6.1.178; affected 6.6.142 before 6.6.145; affected 6.12.92 before 6.12.96; affected 6.18.34 before 6.18.39; affected 7.0.11 before 7.1 |
| Linux / Linux | affected 7.1; unaffected 0 before 7.1; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.96 through 6.12.*; unaffected 6.18.39 through 6.18.*; unaffected 7.1.4 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- 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
ADP enrichment
No English description supplied.
No references supplied.