High 8.8Published Aug 15, 2026

CVE-2026-74531Bluetooth: hci_conn: hold conn reference in abort_conn_sync()

Updated under an hour ago (Oct 28, 2026, 5:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Received
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	249c88e7fb45b6b705040c5af4bd0d0f2bc9735c builds before 64d1645f26aa49b5a86ba2fccd0bb6749ea725a6; from 227a0cdf4a028a73dc256d0f5144b4808d718893 before 963fb4b8e7d1ab07b4ae45bf15d41e667c88caca; from 227a0cdf4a028a73dc256d0f5144b4808d718893 before e8f9fef362bab431d95371d3406bc720350290c3; from 227a0cdf4a028a73dc256d0f5144b4808d718893 before fa812cfa81aa3d4a7b6ce8277979af57b3f79712; from 227a0cdf4a028a73dc256d0f5144b4808d718893 before 5761d003daa987ac81463f570713ce9c9dd204e5; 7fe4d391e937c2f048a43ff4b421e677f10d83c0; 58afdc9b18871eb1d461c725be9e9f3f44a39aeb; from 6.6.51 before 6.6.151; and 2 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/64d1645f26aa49b5a86ba2fccd0bb6749ea725a6
https://git.kernel.org/stable/c/963fb4b8e7d1ab07b4ae45bf15d41e667c88caca
https://git.kernel.org/stable/c/e8f9fef362bab431d95371d3406bc720350290c3
https://git.kernel.org/stable/c/fa812cfa81aa3d4a7b6ce8277979af57b3f79712
https://git.kernel.org/stable/c/5761d003daa987ac81463f570713ce9c9dd204e5

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.