CVE-2026-74538
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: lock sk in iso_connect_ind Accessing iso_pi(sk)->conn requires lock_sock, which is not taken in the "ev3" part of iso_connect_ind. It may also be NULL if socket has transitioned away from the LISTEN/CONNECT states before locking. Fix by adding lock/release. Recheck hcon is valid after lock acquire where needed.
Affected versions
Linux kernel versions
6.8.9,
6.9
and later are affected. Fixed in
6.18.44,
7.1.8,
7.2-rc6
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74538?
CVE-2026-74538 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.8.9 onward and has been patched in 6.18.44, 7.1.8 and 7.2-rc6. CVE-2026-74538 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74538?
Yes. CVE-2026-74538 has been patched. Fixed versions include 6.18.44, 7.1.8 and 7.2-rc6. If you are running Linux kernel 6.8.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74538 actively exploited?
No. CVE-2026-74538 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.