What is CVE-2024-56557?

CVE-2024-56557 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.6 onward and patched in 5.15.203, 6.1.120, 6.6.64 and others. CVE-2024-56557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-56557?

CVE-2024-56557 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-2024-56557?

Yes, CVE-2024-56557 has been patched. Fixed versions include 5.15.203, 6.1.120, 6.6.64 and others. If you are running Linux kernel 5.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-56557 actively exploited?

CVE-2024-56557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2024-56557

Medium

In the Linux kernel, the following vulnerability has been resolved: iio: adc: ad7923: Fix buffer overflow for tx_buf and ring_xfer The AD7923 was updated to support devices with 8 channels, but the size of tx_buf and ring_xfer was not increased accordingly, leading to a potential buffer overflow in ad7923_update_scan_mode().

Package Linux Kernel

Published 2024-12-27

Last modified 2026-04-18

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-120

CVE-2024-56557 is classified as CWE-120

See CWE-120 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.6 and later are affected. Fixed in 5.15.203, 6.1.120, 6.6.64, 6.12.4, 6.13 and their respective stable series.

Affected from

≥ 5.6

Fixed in

✓ 5.15.203 5.15.x ✓ 6.1.120 6.1.x ✓ 6.6.64 6.6.x ✓ 6.12.4 6.12.x ✓ 6.13

References

The following references provide additional information about CVE-2024-56557 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Debian Security
https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
Kernel patch commit
https://git.kernel.org/stable/c/00663d3e000c31d0d49ef86a809f5c107c2d09cd
Patch
Kernel patch commit
https://git.kernel.org/stable/c/218ecc35949129171ca39bcc0d407c8dc4cd0bbc
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3a4187ec454e19903fd15f6e1825a4b84e59a4cd
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2024-56557

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-12-27

Modified 2026-04-18

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-56557?

CVE-2024-56557 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.6 onward and has been patched in 5.15.203, 6.1.120, 6.6.64 and others. CVE-2024-56557 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-56557?

CVE-2024-56557 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-2024-56557?

Yes — CVE-2024-56557 has been patched. Fixed versions include 5.15.203, 6.1.120, 6.6.64 and others. If you are running Linux kernel 5.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-56557 actively exploited?

No — CVE-2024-56557 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.