What is CVE-2022-49564?

CVE-2022-49564 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.8 onward and patched in 5.15.58, 5.18.15 and 5.19. CVE-2022-49564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-49564?

CVE-2022-49564 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-2022-49564?

Yes, CVE-2022-49564 has been patched. Fixed versions include 5.15.58, 5.18.15 and 5.19. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-49564 actively exploited?

CVE-2022-49564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-49564

Medium

In the Linux kernel, the following vulnerability has been resolved: crypto: qat - add param check for DH Reject requests with a source buffer that is bigger than the size of the key. This is to prevent a possible integer underflow that might happen when copying the source scatterlist into a linear buffer.

Package Linux Kernel

Published 2025-02-26

Last modified 2025-10-01

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

Weakness type

CWE-191

CVE-2022-49564 is classified as CWE-191

See CWE-191 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.8 and later are affected. Fixed in 5.15.58, 5.18.15, 5.19 and their respective stable series.

Affected from

≥ 4.8

Fixed in

✓ 5.15.58 5.15.x ✓ 5.18.15 5.18.x ✓ 5.19

References

The following references provide additional information about CVE-2022-49564 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/2acbb8771f6ac82422886e63832ee7a0f4b1635b
Patch
Kernel patch commit
https://git.kernel.org/stable/c/76c9216833e7c20a67c987cf89719a3f01666aaa
Patch
Kernel patch commit
https://git.kernel.org/stable/c/e7f979ed51f96495328157df663c835b17db1e30
Patch

Details

CVE ID CVE-2022-49564

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-02-26

Modified 2025-10-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-49564?

CVE-2022-49564 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.8 onward and has been patched in 5.15.58, 5.18.15 and 5.19. CVE-2022-49564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-49564?

CVE-2022-49564 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-2022-49564?

Yes — CVE-2022-49564 has been patched. Fixed versions include 5.15.58, 5.18.15 and 5.19. If you are running Linux kernel 4.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-49564 actively exploited?

No — CVE-2022-49564 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.