Linux Kernel bnep UAF read of dev->name
CVE-2026-64178 Published on July 19, 2026
Bluetooth: bnep: Fix UAF read of dev->name
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.)
Products Associated with CVE-2026-64178
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below a75bbcb10cb21acc169b785e9804f57d97873a9c is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 4907596f25b1720fa948371ac5f6c1f8da10a5bc is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 915a92182e2cda9cd7d2479020a44c6eda986f7c is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below fe69f634b076ae3ca81c5a5b845d9bba527036f7 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below b21805258d7e926adfd455fc820a447b90da3b82 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 5506aec795135cdd4cbf4e845929155663b25055 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below e7578529b97e5d4e439cf8f3e637c2303015338f is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 59e932ded949fa6f0340bf7c6d7818f962fa4fd2 is affected.
- Version 2.6.12 is affected.
- Before 2.6.12 is unaffected.
- Version 5.10.258, <= 5.10.* is unaffected.
- Version 5.15.209, <= 5.15.* is unaffected.
- Version 6.1.175, <= 6.1.* is unaffected.
- Version 6.6.142, <= 6.6.* is unaffected.
- Version 6.12.92, <= 6.12.* is unaffected.
- Version 6.18.34, <= 6.18.* is unaffected.
- Version 7.0.11, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.