What is CVE-2024-26739?

CVE-2024-26739 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 4.19 onward and patched in 5.10.238, 5.15.182, 6.1.136 and others. CVE-2024-26739 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26739?

CVE-2024-26739 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2024-26739?

Yes, CVE-2024-26739 has been patched. Fixed versions include 5.10.238, 5.15.182, 6.1.136 and others. If you are running Linux kernel 4.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26739 actively exploited?

CVE-2024-26739 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2024-26739

High

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_mirred: don't override retval if we already lost the skb If we're redirecting the skb, and haven't called tcf_mirred_forward(), yet, we need to tell the core to drop the skb by setting the retcode to SHOT. If we have called tcf_mirred_forward(), however, the skb is out of our hands and returning SHOT will lead to UaF. Move the retval override to the error path which actually need it.

Package Linux Kernel

Published 2024-04-03

Last modified 2025-11-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2024-26739 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.19 and later are affected. Fixed in 5.10.238, 5.15.182, 6.1.136, 6.6.19, 6.7.7, 6.8 and their respective stable series.

Affected from

≥ 4.19

Fixed in

✓ 5.10.238 5.10.x ✓ 5.15.182 5.15.x ✓ 6.1.136 6.1.x ✓ 6.6.19 6.6.x ✓ 6.7.7 6.7.x ✓ 6.8

References

8 total

Kernel Git
https://git.kernel.org/stable/c/0117fe0a4615a7c8d30d6ebcbf87332fbe63e6fd

Patch
Kernel Git
https://git.kernel.org/stable/c/166c2c8a6a4dc2e4ceba9e10cfe81c3e469e3210

Patch
Kernel Git
https://git.kernel.org/stable/c/28cdbbd38a4413b8eff53399b3f872fd4e80db9d

Patch
Kernel Git
https://git.kernel.org/stable/c/9d3ef89b6a5e9f2e940de2cef3d543be0be8dec5

Patch
Kernel Git
https://git.kernel.org/stable/c/e873e8f7d03a2ee5b77fb1a305c782fed98e2754

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2024-26739

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-04-03

Modified 2025-11-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26739?

CVE-2024-26739 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 4.19 onward and has been patched in 5.10.238, 5.15.182, 6.1.136 and others. CVE-2024-26739 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26739?

CVE-2024-26739 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2024-26739?

Yes. CVE-2024-26739 has been patched. Fixed versions include 5.10.238, 5.15.182, 6.1.136 and others. If you are running Linux kernel 4.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26739 actively exploited?

No. CVE-2024-26739 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.