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Review reviewHigh

CVE-2026-64178

Linux

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 tig...

CVSS
8.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.20
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8.8

Vulnerability overview

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 tig...

Affected product and versions

Product
Linux
Affected versions
>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < a75bbcb10cb21acc169b785e9804f57d97873a9c, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4907596f25b1720fa948371ac5f6c1f8da10a5bc, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 915a92182e2cda9cd7d2479020a44c6eda986f7c, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fe69f634b076ae3ca81c5a5b845d9bba527036f7, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b21805258d7e926adfd455fc820a447b90da3b82, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5506aec795135cdd4cbf4e845929155663b25055, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e7578529b97e5d4e439cf8f3e637c2303015338f, >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 59e932ded949fa6f0340bf7c6d7818f962fa4fd2, >= 2.6.12
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available