CVE-2026-74541

Summary

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().

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxfbdc4bc47268953c80853489f696e02d61f9a2c6 < cc1d39946d62bc568551dfb81149724de1e91338affected
LinuxLinuxfbdc4bc47268953c80853489f696e02d61f9a2c6 < 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0affected
LinuxLinuxfbdc4bc47268953c80853489f696e02d61f9a2c6 < 63c0f396a18b767eb28e895eb95bbdce6c172c59affected
LinuxLinuxfbdc4bc47268953c80853489f696e02d61f9a2c6 < 69a4a7b162b3db6ac337e3094cdee38f24d42ff7affected
LinuxLinuxfbdc4bc47268953c80853489f696e02d61f9a2c6 < d57e506f6a1e3929611340fae87c1e4823f4d85caffected
LinuxLinuxc03a10bd5b6ccb22921e04bcddc987410df7e7a9affected
LinuxLinux6.5.12 < 6.6affected
LinuxLinux6.6affected
LinuxLinux0 < 6.6unaffected
LinuxLinux6.6.151 <= 6.6.*unaffected
LinuxLinux6.12.103 <= 6.12.*unaffected
LinuxLinux6.18.44 <= 6.18.*unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2-rc6 <= *unaffected

Weaknesses

References