What is CVE-2024-56706?

CVE-2024-56706 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.3 out of 10, classified as a Out-of-bounds Read flaw (CWE-125), affecting Linux kernel versions from 6.12 onward and patched in 6.12.2 and 6.13. CVE-2024-56706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56706?

CVE-2024-56706 has a CVSS score of 6.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2024-56706?

Yes, CVE-2024-56706 has been patched. Fixed versions include 6.12.2 and 6.13. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56706 actively exploited?

CVE-2024-56706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/125.html

CVE-2024-56706

Medium

In the Linux kernel, the following vulnerability has been resolved: s390/cpum_sf: Fix and protect memory allocation of SDBs with mutex Reservation of the PMU hardware is done at first event creation and is protected by a pair of mutex_lock() and mutex_unlock(). After reservation of the PMU hardware the memory required for the PMUs the event is to be installed on is allocated by allocate_buffers() and alloc_sampling_buffer(). This done outside of the mutex protection. Without mutex protection two or more concurrent invocations of perf_event_init() may run in parallel. This can lead to allocation of Sample Data Blocks (SDBs) multiple times for the same PMU. Prevent this and protect memory allocation of SDBs by mutex.

Package Linux Kernel

Published 2024-12-28

Last modified 2025-09-26

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

6.3

out of 10

Medium

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-125

CVE-2024-56706 is a Out-of-bounds Read vulnerability

What is Out-of-bounds Read?

The product reads data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.12 and later are affected. Fixed in 6.12.2, 6.13 and their respective stable series.

Affected from

≥ 6.12

Fixed in

✓ 6.12.2 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56706 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/4b3bdfa89635db6a53e02955548bd07bebcae233
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f55bd479d8663a4a4e403b3d308d3d1aa33d92df
Patch

Details

CVE ID CVE-2024-56706

Severity Medium

CVSS score 6.3 / 10

CVSS version 3.1

Published 2024-12-28

Modified 2025-09-26

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56706?

CVE-2024-56706 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.3 out of 10 , classified as an Out-of-bounds Read flaw (CWE-125) . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.2 and 6.13. CVE-2024-56706 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56706?

CVE-2024-56706 has a CVSS score of 6.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2024-56706?

Yes — CVE-2024-56706 has been patched. Fixed versions include 6.12.2 and 6.13. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56706 actively exploited?

No — CVE-2024-56706 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Out-of-bounds Read (CWE-125)?

The product reads data past the end or before the beginning of the intended buffer. View CWE-125 on MITRE CWE →