CVE-2022-49555
Bluetooth: hci_qca: Use del_timer_sync() before freeing
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_qca: Use del_timer_sync() before freeing While looking at a crash report on a timer list being corrupted, which usually happens when a timer is freed while still active. This is commonly triggered by code calling del_timer() instead of del_timer_sync() just before freeing. One possible culprit is the hci_qca driver, which does exactly that. Eric mentioned that wake_retrans_timer could be rearmed via the work queue, so also move the destruction of the work queue before del_timer_sync().
Timeline
ID reserved
By Linux
Published
- 18 months later
· 18 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.27% · top 80% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 0ff252c1976da5d80db1377eb39b551931e61826 – < 4989bb03342941f2b730b37dfa38bce27b543661
- affected 0ff252c1976da5d80db1377eb39b551931e61826 – < db03727b4bbbbb36e6ef4cb655c670eefb6448e9
- affected 0ff252c1976da5d80db1377eb39b551931e61826 – < 37d17f63d085d601011964ade7371aeebeb6ed4b
- affected 0ff252c1976da5d80db1377eb39b551931e61826 – < 2717654ae022e6ea959a4b7b762702fe1a4690c2
- affected 0ff252c1976da5d80db1377eb39b551931e61826 – < 72ef98445aca568a81c2da050532500a8345ad3a
- affected 4.3
- unaffected < 4.3
- unaffected 5.10.120 – ≤ 5.10.*
- unaffected 5.15.45 – ≤ 5.15.*
- unaffected 5.17.13 – ≤ 5.17.*
- unaffected 5.18.2 – ≤ 5.18.*
- unaffected 5.19 – ≤ *
References (5)
- https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661 (opens in a new tab)
- https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9 (opens in a new tab)
- https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b (opens in a new tab)
- https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2 (opens in a new tab)
- https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2022-49555)Record last updated .