What is CVE-2024-56550?

CVE-2024-56550 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.9.4 onward and patched in 6.12.4 and 6.13. CVE-2024-56550 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56550?

CVE-2024-56550 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-2024-56550?

Yes, CVE-2024-56550 has been patched. Fixed versions include 6.12.4 and 6.13. If you are running Linux kernel 6.9.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56550 actively exploited?

CVE-2024-56550 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-56550

Medium

In the Linux kernel, the following vulnerability has been resolved: s390/stacktrace: Use break instead of return statement arch_stack_walk_user_common() contains a return statement instead of a break statement in case store_ip() fails while trying to store a callchain entry of a user space process. This may lead to a missing pagefault_enable() call. If this happens any subsequent page fault of the process won't be resolved by the page fault handler and this in turn will lead to the process being killed. Use a break instead of a return statement to fix this.

Package Linux Kernel

Published 2024-12-27

Last modified 2025-10-08

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 6.9.4, 6.10 and later are affected. Fixed in 6.12.4, 6.13 and their respective stable series.

Affected from

≥ 6.9.4 ≥ 6.10

Fixed in

✓ 6.12.4 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56550 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/20c26357826457dc7c8145297e60ddc012e18914
Patch
Kernel patch commit
https://git.kernel.org/stable/c/588a9836a4ef7ec3bfcffda526dfa399637e6cfc
Patch

Details

CVE ID CVE-2024-56550

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2025-10-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56550?

CVE-2024-56550 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.9.4 onward and has been patched in 6.12.4 and 6.13. CVE-2024-56550 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56550?

CVE-2024-56550 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-2024-56550?

Yes — CVE-2024-56550 has been patched. Fixed versions include 6.12.4 and 6.13. If you are running Linux kernel 6.9.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56550 actively exploited?

No — CVE-2024-56550 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.