CVE-2026-74541 is a vulnerability in Linux Kernel
Published on August 15, 2026
Bluetooth: ISO: clear iso_data always when detaching conn from hcon
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().
Products Associated with CVE-2026-74541
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Affected Versions
Linux:- Version fbdc4bc47268953c80853489f696e02d61f9a2c6 and below cc1d39946d62bc568551dfb81149724de1e91338 is affected.
- Version fbdc4bc47268953c80853489f696e02d61f9a2c6 and below 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0 is affected.
- Version fbdc4bc47268953c80853489f696e02d61f9a2c6 and below 63c0f396a18b767eb28e895eb95bbdce6c172c59 is affected.
- Version fbdc4bc47268953c80853489f696e02d61f9a2c6 and below 69a4a7b162b3db6ac337e3094cdee38f24d42ff7 is affected.
- Version fbdc4bc47268953c80853489f696e02d61f9a2c6 and below d57e506f6a1e3929611340fae87c1e4823f4d85c is affected.
- Version c03a10bd5b6ccb22921e04bcddc987410df7e7a9 is affected.
- Version 6.5.12 and below 6.6 is affected.
- Version 6.6 is affected.
- Before 6.6 is unaffected.
- Version 6.6.151, <= 6.6.* is unaffected.
- Version 6.12.103, <= 6.12.* is unaffected.
- Version 6.18.44, <= 6.18.* is unaffected.
- Version 7.1.8, <= 7.1.* is unaffected.
- Version 7.2-rc6, <= * is unaffected.