Vulnerability details
CVE-2022-49555
Linux Linux
Bluetooth: hci_qca: Use del_timer_sync() before freeing
CVSS 3.1
7.8High
Official 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().
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 4.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 0ff252c1976da5d80db1377eb39b551931e61826 ≤ v < 4989bb03342941f2b730b37dfa38bce27b543661 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 0ff252c1976da5d80db1377eb39b551931e61826 ≤ v < db03727b4bbbbb36e6ef4cb655c670eefb6448e9 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 0ff252c1976da5d80db1377eb39b551931e61826 ≤ v < 37d17f63d085d601011964ade7371aeebeb6ed4b | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 0ff252c1976da5d80db1377eb39b551931e61826 ≤ v < 2717654ae022e6ea959a4b7b762702fe1a4690c2 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 0ff252c1976da5d80db1377eb39b551931e61826 ≤ v < 72ef98445aca568a81c2da050532500a8345ad3a | CVEProject cvelistV5 (CNA) |
References and advisories
5- https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661
- https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9
- https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b
- https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2
- https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a
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Details
- Published
- 2025-02-26
- Last updated
- 2026-08-05
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.27%
Probability of exploitation in 30 days
20%
Percentile (among all CVEs)
Weaknesses (CWE)
- —