CVE-2026-74530Bluetooth: hci_sync: hold conn in hci_connect_big_sync() callback
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 024421cf39923927ab2b5fe895d1d922b9abe67f before ff5625d27415ace5667bf87ebc16c3a0a98db22f; 024421cf39923927ab2b5fe895d1d922b9abe67f builds before 2d91e6244b69d752503b2d44020d8b0e323dbd38; 024421cf39923927ab2b5fe895d1d922b9abe67f builds before 56e78b670356caab0b607e8aad4cf819a1909d07; 620810ac1f7f1133a9ac403e132b3ad6995ddf39; ee0586ad64a805eaf1a9a10100e908627a561e34; from 6.12.28 before 6.13; from 6.14.6 before 6.15 | CNA record |
References
- https://git.kernel.org/stable/c/ff5625d27415ace5667bf87ebc16c3a0a98db22f
- https://git.kernel.org/stable/c/2d91e6244b69d752503b2d44020d8b0e323dbd38
- https://git.kernel.org/stable/c/56e78b670356caab0b607e8aad4cf819a1909d07
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.