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CVE-2026-74541

HIGHCVSS 8.8/10EPSS 0.17%

Last modified

CVE-2026-74541 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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().. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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().

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.17%

6.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= fbdc4bc47268953c80853489f696e02d61f9a2c6, < cc1d39946d62bc568551dfb81149724de1e91338; >= fbdc4bc47268953c80853489f696e02d61f9a2c6, < 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0; >= fbdc4bc47268953c80853489f696e02d61f9a2c6, < 63c0f396a18b767eb28e895eb95bbdce6c172c59; >= fbdc4bc47268953c80853489f696e02d61f9a2c6, < 69a4a7b162b3db6ac337e3094cdee38f24d42ff7; >= fbdc4bc47268953c80853489f696e02d61f9a2c6, < d57e506f6a1e3929611340fae87c1e4823f4d85c; c03a10bd5b6ccb22921e04bcddc987410df7e7a9; >= 6.5.12, < 6.6
LinuxLinux6.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-74541?
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().
How severe is CVE-2026-74541?
CVE-2026-74541 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2026-74541?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST