Bluetooth: hci_qca: Use del_timer_sync() before freeing
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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().
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 4.3 and later | 5.10.120, 5.15.45, 5.17.13, 5.18.2, 5.19 | Patch available | CNA |
- Linux VendorLinux Affected 4.3 and later Fixed in 5.10.120, 5.15.45, 5.17.13, 5.18.2, 5.19 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.3 to before 5.10.120; 5.11 to before 5.15.45; 5.16 to before 5.17.13; 5.18 to before 5.18.2 | Vulnerable | Linux |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.3 to before 5.10.120; 5.11 to before 5.15.45; 5.16 to before 5.17.13; 5.18 to before 5.18.2 Vulnerable ·Linux
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.120, 5.15.45, 5.17.13, 5.18.2, 5.19
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
Not affected: 5 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-49555
- 2026-10-03 Alias added: GHSA-x3w4-q7cr-j86p
- 2026-11-07 Affected versions changed · Red Hat
References
Patch 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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Sources
- CVE-2022-49555 · CVE Program
- CVE-2022-49555 · NVD
- FIRST EPSS
- GHSA-x3w4-q7cr-j86p · GitHub Advisory Database · CC BY 4.0
- CVE-2022-49555 · Red Hat security data · CC BY 4.0
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