CVE-2024-50044

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

Affected Software

VendorProductVersion RangeStatus
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < b77b3fb12fd483cae7c28648903b1d8a6b275f01affected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < 869c6ee62ab8f01bf2419e45326642be5c9b670aaffected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < ef44274dae9b0a90d1a97ce8b242a3b8243a7745affected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < 496b2ab0fd10f205e08909a125485fdc98843dbeaffected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < ced98072d3511b232ae1d3347945f35f30c0e303affected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < 38b2d5a57d125e1c17661b8308c0240c4a43b534affected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < 4cb9807c9b53bf1e5560420d26f319f528b50268affected
LinuxLinux3241ad820dbb172021e0268b5611031991431626 < 08d1914293dae38350b8088980e59fbc699a72feaffected
LinuxLinux2.6.27affected
LinuxLinux0 < 2.6.27unaffected
LinuxLinux4.19.323 <= 4.19.*unaffected
LinuxLinux5.4.285 <= 5.4.*unaffected
LinuxLinux5.10.227 <= 5.10.*unaffected
LinuxLinux5.15.168 <= 5.15.*unaffected
LinuxLinux6.1.113 <= 6.1.*unaffected
LinuxLinux6.6.57 <= 6.6.*unaffected
LinuxLinux6.11.4 <= 6.11.*unaffected
LinuxLinux6.12 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

Additional References

References