CVE-2026-74530
Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 15, 2026 |
| Last Updated | Oct 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
620810ac1f7f1133a9ac403e132b3ad6995ddf39 < 117d8bcaf1abc348185e8ab6a4ba9f8f516849a0 024421cf39923927ab2b5fe895d1d922b9abe67f < ff5625d27415ace5667bf87ebc16c3a0a98db22f 024421cf39923927ab2b5fe895d1d922b9abe67f < 2d91e6244b69d752503b2d44020d8b0e323dbd38 024421cf39923927ab2b5fe895d1d922b9abe67f < 56e78b670356caab0b607e8aad4cf819a1909d07 ee0586ad64a805eaf1a9a10100e908627a561e34 6.12.28 < 6.12.114 6.14.6 < 6.15
Linux / Linux
6.15
References
git.kernel.org: https://git.kernel.org/stable/c/117d8bcaf1abc348185e8ab6a4ba9f8f516849a0 git.kernel.org: https://git.kernel.org/stable/c/ff5625d27415ace5667bf87ebc16c3a0a98db22f git.kernel.org: https://git.kernel.org/stable/c/2d91e6244b69d752503b2d44020d8b0e323dbd38 git.kernel.org: https://git.kernel.org/stable/c/56e78b670356caab0b607e8aad4cf819a1909d07