CVE-2026-74530

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.

CVSS 3.1

8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-25)

Published

2026-08-15

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

References

• https://git.kernel.org/stable/c/117d8bcaf1abc348185e8ab6a4ba9f8f516849a0
• https://git.kernel.org/stable/c/2d91e6244b69d752503b2d44020d8b0e323dbd38
• https://git.kernel.org/stable/c/56e78b670356caab0b607e8aad4cf819a1909d07
• https://git.kernel.org/stable/c/ff5625d27415ace5667bf87ebc16c3a0a98db22f

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