CVE-2026-74530

Summary

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback

There is theoretical UAF if the conn is freed while the hci_sync task is running.

Hold refcount to avoid that. Handle NULL hcon, return 0 + do nothing to match the previous behavior.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux024421cf39923927ab2b5fe895d1d922b9abe67f < 2d91e6244b69d752503b2d44020d8b0e323dbd38affected
LinuxLinux024421cf39923927ab2b5fe895d1d922b9abe67f < 56e78b670356caab0b607e8aad4cf819a1909d07affected
LinuxLinux620810ac1f7f1133a9ac403e132b3ad6995ddf39affected
LinuxLinuxee0586ad64a805eaf1a9a10100e908627a561e34affected
LinuxLinux6.12.28 < 6.13affected
LinuxLinux6.14.6 < 6.15affected
LinuxLinux6.15affected
LinuxLinux0 < 6.15unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2-rc6 <= *unaffected

Weaknesses

References