CVE-2026-53357

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del() bt_accept_dequeue() unlinks a not-yet-accepted child from the parent accept queue and release_sock()s it before returning, so the returned sk has no caller reference and is unlocked. l2cap_sock_cleanup_listen() walks these children on listening-socket close. A concurrent HCI disconnect drives hci_rx_work -> l2cap_conn_del() which runs l2cap_chan_del() + l2cap_sock_kill() and frees the child sk and its l2cap_chan; cleanup_listen() then uses both: BUG: KASA...

Affected product and versions

Product

Linux Linux, linux kernel

Affected versions

>= 15f02b91056253e8cdc592888f431da0731337b8 < 751de6ec671fe75ad9cf65a0638d2a06b6a5984d, >= 15f02b91056253e8cdc592888f431da0731337b8 < 407217734835d21d4e0105ebf347860dc1806f88, >= 15f02b91056253e8cdc592888f431da0731337b8 < 7eebd4c2c86f573af87ff165d08a83432eb0b919, >= 15f02b91056253e8cdc592888f431da0731337b8 < 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57, >= 15f02b91056253e8cdc592888f431da0731337b8 < 87c543e2f78d0871f271df92dab98901bbd5b6f5, >= 15f02b91056253e8cdc592888f431da0731337b8 < added1213395071470a900cc845a042fb51882a6, >= 15f02b91056253e8cdc592888f431da0731337b8 < a5ca86a6097a8b030ca3226cd300b17ed330f966, >= 15f02b91056253e8cdc592888f431da0731337b8 < ab1513597c6cf17cd1ad2a21e3b045421b48e022, >= 5.7, >= 5.7 < 5.10.259, >= 5.11 < 5.15.210, >= 5.16 < 6.1.175, >= 6.2 < 6.6.142, >= 6.7 < 6.12.92, >= 6.13 < 6.18.34, >= 6.19 < 7.0.11, 7.1

Fixed versions

5.10.259, 5.15.210, 6.1.175, 6.6.142, 6.12.92, 6.18.34, 7.0.11

Technical data

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-416