CVE-2024-26856

Name: CVE-2024-26856
Creator: NVD / NIST
Published: 2024-04-17T11:15:08.74+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2024-26856 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: net: sparx5: Fix use after free inside sparx5_del_mact_entry Based on the static analyzis of the code it looks like when an entry from the MAC table was removed, the entry was still used after being freed. More precise the vid of the mac_entry was used after calling devm_kfree on the mac_entry. The fix consists in first using the vid of the mac_entry to delete the entry from the HW and after that to free it.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: net: sparx5: Fix use after free inside sparx5_del_mact_entry Based on the static analyzis of the code it looks like when an entry from the MAC table was removed, the entry was still used after being freed. More precise the vid of the mac_entry was used after calling devm_kfree on the mac_entry. The fix consists in first using the vid of the mac_entry to delete the entry from the HW and after that to free it.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.23%

13.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Linux	Linux Kernel	>= 5.14, < 5.15.152	—
Linux	Linux Kernel	>= 5.16, < 6.1.82	—
Linux	Linux Kernel	>= 6.2, < 6.6.22	—
Linux	Linux Kernel	>= 6.7, < 6.7.10	—
Linux	Linux Kernel	6.8	Rc1

References

https://git.kernel.org/stable/c/0de693d68b0a18d5e256556c7c62d92cca35ad52Mailing List, Patch
https://git.kernel.org/stable/c/71809805b95052ff551922f11660008fb3666025Mailing List, Patch
https://git.kernel.org/stable/c/89d72d4125e94aa3c2140fedd97ce07ba9e37674Mailing List, Patch
https://git.kernel.org/stable/c/e46274df1100fb0c06704195bfff5bfbd418bf64Mailing List, Patch
https://git.kernel.org/stable/c/e83bebb718fd1f42549358730e1206164e0861d6Mailing List, Patch
https://git.kernel.org/stable/c/0de693d68b0a18d5e256556c7c62d92cca35ad52Mailing List, Patch
https://git.kernel.org/stable/c/71809805b95052ff551922f11660008fb3666025Mailing List, Patch
https://git.kernel.org/stable/c/89d72d4125e94aa3c2140fedd97ce07ba9e37674Mailing List, Patch
https://git.kernel.org/stable/c/e46274df1100fb0c06704195bfff5bfbd418bf64Mailing List, Patch
https://git.kernel.org/stable/c/e83bebb718fd1f42549358730e1206164e0861d6Mailing List, Patch

Timeline

Published: Apr 17, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-26856?

How severe is CVE-2024-26856?

CVE-2024-26856 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2024-26856?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-26856?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST