CVE-2026-74531
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: hold conn reference in abort_conn_sync() There is theoretical UAF if the conn is freed while the hci_sync task is running. Hold refcount to avoid that.
Affected versions
Linux kernel versions
6.6.51,
6.10.10,
6.11
and later are affected. Fixed in
6.6.151,
6.12.103,
6.18.44,
7.1.8,
7.2-rc6
and their respective stable series.
References
5 totalFrequently asked questions
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What is CVE-2026-74531?
CVE-2026-74531 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.6.51 onward and has been patched in 6.6.151, 6.12.103, 6.18.44 and others. CVE-2026-74531 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-2026-74531?
Yes. CVE-2026-74531 has been patched. Fixed versions include 6.6.151, 6.12.103, 6.18.44 and others. If you are running Linux kernel 6.6.51 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74531 actively exploited?
No. CVE-2026-74531 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.