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CVE-2024-50044

Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.19.323, 5.4.285, 5.10.227, 5.15.168, 6.1.113, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change rfcomm_sk_state_change attempts to use sock_lock so it must never be called with it locked but rfcomm_sock_ioctl always attempt to lock it causing the following trace: ====================================================== WARNING: possible circular locking dependency detected 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted ------------------------------------------------------ syz-executor386/5093 is trying to acquire lock: ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1671 [inline] ffff88807c396258 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sk_state_change+0x5b/0x310 net/bluetooth/rfcomm/sock.c:73 but task is already holding lock: ffff88807badfd28 (&d->lock){+.+.}-{3:3}, at: __rfcomm_dlc_close+0x226/0x6a0 net/bluetooth/rfcomm/core.c:491

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • Linux Linux

    From 3241ad820dbb172021e0268b5611031991431626 · fixed in b77b3fb12fd483cae7c28648903b1d8a6b275f01; From 3241ad820dbb172021e0268b5611031991431626 · fixed in 869c6ee62ab8f01bf2419e45326642be5c9b670a; From 3241ad820dbb172021e0268b5611031991431626 · fixed in ef44274dae9b0a90d1a97ce8b242a3b8243a7745; From 3241ad820dbb172021e0268b5611031991431626 · fixed in 496b2ab0fd10f205e08909a125485fdc98843dbe; From 3241ad820dbb172021e0268b5611031991431626 · fixed in ced98072d3511b232ae1d3347945f35f30c0e303; From 3241ad820dbb172021e0268b5611031991431626 · fixed in 38b2d5a57d125e1c17661b8308c0240c4a43b534; From 3241ad820dbb172021e0268b5611031991431626 · fixed in 4cb9807c9b53bf1e5560420d26f319f528b50268; From 3241ad820dbb172021e0268b5611031991431626 · fixed in 08d1914293dae38350b8088980e59fbc699a72fe

  • Linux Linux

    2.6.27

  • KernelLinux

    From 2.6.27 · fixed in 4.19.323; From 4.20.0 · fixed in 5.4.285; From 5.5.0 · fixed in 5.10.227; From 5.11.0 · fixed in 5.15.168; From 5.16.0 · fixed in 6.1.113; From 6.2.0 · fixed in 6.6.57; From 6.7.0 · fixed in 6.11.4

References 8

git.kernel.org