CVE-2026-64178

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

State: Published
Severity: 8.8 High
Published: Jul 19, 2026
Updated: Oct 19, 2026
Reserved: Jul 19, 2026

Description

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.)

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a75bbcb10cb21acc169b785e9804f57d97873a9cAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4907596f25b1720fa948371ac5f6c1f8da10a5bcAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 915a92182e2cda9cd7d2479020a44c6eda986f7cAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before fe69f634b076ae3ca81c5a5b845d9bba527036f7Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b21805258d7e926adfd455fc820a447b90da3b82Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5506aec795135cdd4cbf4e845929155663b25055Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e7578529b97e5d4e439cf8f3e637c2303015338fAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 59e932ded949fa6f0340bf7c6d7818f962fa4fd2Affected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.142 through 6.6.Not affected 6.12.92 through 6.12.Not affected 6.18.34 through 6.18.Not affected 7.0.11 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a75bbcb10cb21acc169b785e9804f57d97873a9cAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 4907596f25b1720fa948371ac5f6c1f8da10a5bcAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 915a92182e2cda9cd7d2479020a44c6eda986f7cAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before fe69f634b076ae3ca81c5a5b845d9bba527036f7Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before b21805258d7e926adfd455fc820a447b90da3b82Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 5506aec795135cdd4cbf4e845929155663b25055Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e7578529b97e5d4e439cf8f3e637c2303015338fAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 59e932ded949fa6f0340bf7c6d7818f962fa4fd2Affected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.142 through 6.6.*Not affected
6.12.92 through 6.12.*Not affected
6.18.34 through 6.18.*Not affected
7.0.11 through 7.0.*Not affected
7.1 and laterNot affected

References

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