What is CVE-2024-44986?

CVE-2024-44986 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 5.4.137 onward and patched in 5.15.166, 6.1.107, 6.6.48 and others. CVE-2024-44986 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-44986?

CVE-2024-44986 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-2024-44986?

Yes, CVE-2024-44986 has been patched. Fixed versions include 5.15.166, 6.1.107, 6.6.48 and others. If you are running Linux kernel 5.4.137 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-44986 actively exploited?

CVE-2024-44986 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-2024-44986

High

In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in ip6_finish_output2() If skb_expand_head() returns NULL, skb has been freed and associated dst/idev could also have been freed. We need to hold rcu_read_lock() to make sure the dst and associated idev are alive.

Package Linux Kernel

Published 2024-09-04

Last modified 2026-04-09

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-2024-44986 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 5.4.137, 5.10.55, 5.13.7, 5.14 and later are affected. Fixed in 5.15.166, 6.1.107, 6.6.48, 6.10.7, 6.11 and their respective stable series.

Affected from

≥ 5.4.137 ≥ 5.10.55 ≥ 5.13.7 ≥ 5.14

Fixed in

✓ 5.15.166 5.15.x ✓ 6.1.107 6.1.x ✓ 6.6.48 6.6.x ✓ 6.10.7 6.10.x ✓ 6.11

References

6 total

Kernel Git
https://git.kernel.org/stable/c/3574d28caf9a09756ae87ad1ea096c6f47b6101e

Patch
Kernel Git
https://git.kernel.org/stable/c/56efc253196751ece1fc535a5b582be127b0578a

Patch
Kernel Git
https://git.kernel.org/stable/c/6ab6bf731354a6fdbaa617d1ec194960db61cf3b

Patch
Kernel Git
https://git.kernel.org/stable/c/da273b377ae0d9bd255281ed3c2adb228321687b

Patch
Kernel Git
https://git.kernel.org/stable/c/e891b36de161fcd96f12ff83667473e5067b9037

Patch

Showing 5 of 6 references View all on NVD

Details

CVE ID CVE-2024-44986

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-09-04

Modified 2026-04-09

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-44986?

CVE-2024-44986 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 5.4.137 onward and has been patched in 5.15.166, 6.1.107, 6.6.48 and others. CVE-2024-44986 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-44986?

CVE-2024-44986 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-2024-44986?

Yes. CVE-2024-44986 has been patched. Fixed versions include 5.15.166, 6.1.107, 6.6.48 and others. If you are running Linux kernel 5.4.137 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-44986 actively exploited?

No. CVE-2024-44986 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.