Bluetooth: bnep: Fix UAF read of dev->name

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: bnep: Fix UAF read of dev->name bnep_add_connection() needs to keep holding the bnep_session_sem while reading dev->name (just like bnep_get_connlist() does); otherwise the bnep_session() thread can concurrently free the net_device, which can for example be triggered by a concurrent bnep_del_connection(). (This UAF is fairly uninteresting from a security perspective; calling bnep_add_connection() requires passing a capable(CAP_NET_ADMIN) check. It also requires completely tearing down a netdev during a fairly tight race window.)

Timeline

1. Jul 19, 2026, 3:41 PM UTCCVE published
2. Oct 16, 2026, 3:37 PM UTCCISA SSVC assessment

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

3. Oct 19, 2026, 8:28 PM UTCRecord last updated

Affected versions

• Linux Linux

  From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in a75bbcb10cb21acc169b785e9804f57d97873a9c; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 4907596f25b1720fa948371ac5f6c1f8da10a5bc; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 915a92182e2cda9cd7d2479020a44c6eda986f7c; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in fe69f634b076ae3ca81c5a5b845d9bba527036f7; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in b21805258d7e926adfd455fc820a447b90da3b82; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 5506aec795135cdd4cbf4e845929155663b25055; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in e7578529b97e5d4e439cf8f3e637c2303015338f; From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 · fixed in 59e932ded949fa6f0340bf7c6d7818f962fa4fd2

• Linux Linux

  2.6.12

• KernelLinux

  From 2.6.12 · fixed in 5.10.258; From 5.11.0 · fixed in 5.15.209; From 5.16.0 · fixed in 6.1.175; From 6.2.0 · fixed in 6.6.142; From 6.7.0 · fixed in 6.12.92; From 6.13.0 · fixed in 6.18.34; From 6.19.0 · fixed in 7.0.11

References 8