High 8.8Published Aug 15, 2026

CVE-2026-74541Bluetooth: ISO: clear iso_data always when detaching conn from hcon

Updated under an hour ago (Oct 27, 2026, 8:10 PM 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: ISO: clear iso_data always when detaching conn from hcon When setting conn->hcon = NULL, also conn->hcon->iso_data = NULL is necessary, otherwise later iso_conn_free() will UAF. Fix clearing of iso_data in iso_sock_disconn() Fixes KASAN: slab-use-after-free in iso_conn_hold_unless_zero on iso_sock_release() followed by hci_abort_conn_sync().

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)	from fbdc4bc47268953c80853489f696e02d61f9a2c6 before cc1d39946d62bc568551dfb81149724de1e91338; from fbdc4bc47268953c80853489f696e02d61f9a2c6 before 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0; from fbdc4bc47268953c80853489f696e02d61f9a2c6 before 63c0f396a18b767eb28e895eb95bbdce6c172c59; from fbdc4bc47268953c80853489f696e02d61f9a2c6 before 69a4a7b162b3db6ac337e3094cdee38f24d42ff7; from fbdc4bc47268953c80853489f696e02d61f9a2c6 before d57e506f6a1e3929611340fae87c1e4823f4d85c; c03a10bd5b6ccb22921e04bcddc987410df7e7a9; from 6.5.12 before 6.6	CNA record

References

References

https://git.kernel.org/stable/c/cc1d39946d62bc568551dfb81149724de1e91338
https://git.kernel.org/stable/c/7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0
https://git.kernel.org/stable/c/63c0f396a18b767eb28e895eb95bbdce6c172c59
https://git.kernel.org/stable/c/69a4a7b162b3db6ac337e3094cdee38f24d42ff7
https://git.kernel.org/stable/c/d57e506f6a1e3929611340fae87c1e4823f4d85c

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.