What is CVE-2022-49555?

CVE-2022-49555 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.3 onward and patched in 5.10.120, 5.15.45, 5.17.13 and others. CVE-2022-49555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49555?

CVE-2022-49555 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-49555?

Yes, CVE-2022-49555 has been patched. Fixed versions include 5.10.120, 5.15.45, 5.17.13 and others. If you are running Linux kernel 4.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49555 actively exploited?

CVE-2022-49555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49555

Medium

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().

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-22

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.3 and later are affected. Fixed in 5.10.120, 5.15.45, 5.17.13, 5.18.2, 5.19 and their respective stable series.

Affected from

≥ 4.3

Fixed in

✓ 5.10.120 5.10.x ✓ 5.15.45 5.15.x ✓ 5.17.13 5.17.x ✓ 5.18.2 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49555 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2022-49555

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-22

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49555?

CVE-2022-49555 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.3 onward and has been patched in 5.10.120, 5.15.45, 5.17.13 and others. CVE-2022-49555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49555?

CVE-2022-49555 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-49555?

Yes — CVE-2022-49555 has been patched. Fixed versions include 5.10.120, 5.15.45, 5.17.13 and others. If you are running Linux kernel 4.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49555 actively exploited?

No — CVE-2022-49555 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.