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ReviewHigh

CVE-2026-74539

Linux

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in iso_sock_getname Accessing iso_pi(sk)->conn requires lock_sock, which is not held here. Fix by adding the lock/release.

CVSS
8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.08.15
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in iso_sock_getname Accessing iso_pi(sk)->conn requires lock_sock, which is not held here. Fix by adding the lock/release.

Affected product and versions

Product
Linux
Affected versions
>= 2df108c227b266a9ec9e3fda3828d2ac9662aa33 < 72d5bb1d77d7c3330146dc0cfd43f704c64b9594, >= 2df108c227b266a9ec9e3fda3828d2ac9662aa33 < 202670e6602e068558c1fca2df40719ee91a2906, >= 2df108c227b266a9ec9e3fda3828d2ac9662aa33 < 89cf154d7c18e6e94a3da83051f3cf2bac317ae2, >= 6.16
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:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available