Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: clear chan->ident on ECRED reconfiguration success l2cap_ecred_reconf_rsp() returns early on success without clearing chan->ident. Every other L2CAP response handler (l2cap_ecred_conn_rsp, l2cap_le_connect_rsp, l2cap_config_rsp) clears chan->ident after a successful transaction to prevent the channel from matching subsequent responses with the recycled ident value. A remote attacker that completed a reconfiguration as the peer can replay a failure response with the stale ident, causing the kernel to match and destroy the already-established channel via l2cap_chan_del(chan, ECONNRESET). Clear chan->ident for all matching channels on success, and harden the failure path by using l2cap_chan_hold_unless_zero() consistent with other L2CAP handlers (l2cap_le_command_rej, __l2cap_get_chan_by_ident).
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 15f02b91056253e8cdc592888f431da0731337b8 before 59f5ecf6ad5c4db6ae81965a96156954a3b0d89a; affected 15f02b91056253e8cdc592888f431da0731337b8 before ae0152d77d101c920769934fb102b18de0c6f526; affected 15f02b91056253e8cdc592888f431da0731337b8 before c2afd2613fda90107c5e2fe8e855627451749c78; affected 15f02b91056253e8cdc592888f431da0731337b8 before cc2b4f749de09975bfa06e58bbbad2f6acd4c79c; affected 15f02b91056253e8cdc592888f431da0731337b8 before 3b5b5f423b4fd23404a393bda8adba3cd6f74ef1; affected 15f02b91056253e8cdc592888f431da0731337b8 before f39049304ba655ffcbb92edbdf8c51a1f1210bed; affected 15f02b91056253e8cdc592888f431da0731337b8 before 8e7977afaef37c6bd2b2654f1bce6ab40d471147; affected 15f02b91056253e8cdc592888f431da0731337b8 before 00e1950716c6ed67d74777b2db286b0fa23b4be9 |
| Linux / Linux | affected 5.7; unaffected 0 before 5.7; unaffected 5.10.259 through 5.10.*; unaffected 5.15.210 through 5.15.*; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/59f5ecf6ad5c4db6ae81965a96156954a3b0d89a
- https://git.kernel.org/stable/c/ae0152d77d101c920769934fb102b18de0c6f526
- https://git.kernel.org/stable/c/c2afd2613fda90107c5e2fe8e855627451749c78
- https://git.kernel.org/stable/c/cc2b4f749de09975bfa06e58bbbad2f6acd4c79c
- https://git.kernel.org/stable/c/3b5b5f423b4fd23404a393bda8adba3cd6f74ef1
- https://git.kernel.org/stable/c/f39049304ba655ffcbb92edbdf8c51a1f1210bed
- https://git.kernel.org/stable/c/8e7977afaef37c6bd2b2654f1bce6ab40d471147
- https://git.kernel.org/stable/c/00e1950716c6ed67d74777b2db286b0fa23b4be9
ADP enrichment
No English description supplied.
No references supplied.