CVE-2026-74531 PUBLISHED

Bluetooth: hci_conn: hold conn reference in abort_conn_sync()

Assigner: Linux
Reserved: 15.08.2026 Published: 15.08.2026 Updated: 15.08.2026

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_conn: hold conn reference in abort_conn_sync()

There is theoretical UAF if the conn is freed while the hci_sync task is running.

Hold refcount to avoid that.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 249c88e7fb45b6b705040c5af4bd0d0f2bc9735c to 64d1645f26aa49b5a86ba2fccd0bb6749ea725a6 (excl.)
  • affected from 227a0cdf4a028a73dc256d0f5144b4808d718893 to 963fb4b8e7d1ab07b4ae45bf15d41e667c88caca (excl.)
  • affected from 227a0cdf4a028a73dc256d0f5144b4808d718893 to e8f9fef362bab431d95371d3406bc720350290c3 (excl.)
  • affected from 227a0cdf4a028a73dc256d0f5144b4808d718893 to fa812cfa81aa3d4a7b6ce8277979af57b3f79712 (excl.)
  • affected from 227a0cdf4a028a73dc256d0f5144b4808d718893 to 5761d003daa987ac81463f570713ce9c9dd204e5 (excl.)
  • Version 58afdc9b18871eb1d461c725be9e9f3f44a39aeb is affected
  • affected from 6.6.51 to 6.6.151 (excl.)
  • affected from 6.10.10 to 6.11 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.11 is affected
  • unaffected from 0 to 6.11 (excl.)
  • unaffected from 6.6.151 to 6.6.* (incl.)
  • unaffected from 6.12.103 to 6.12.* (incl.)
  • unaffected from 6.18.44 to 6.18.* (incl.)
  • unaffected from 7.1.8 to 7.1.* (incl.)
  • unaffected from 7.2-rc6 to * (incl.)

References