What is CVE-2024-1086?

CVE-2024-1086 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 3.15 onward and patched in 6.8. CVE-2024-1086 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.

What is the CVSS score for CVE-2024-1086?

CVE-2024-1086 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-2024-1086?

Yes, CVE-2024-1086 has been patched. Fixed versions include 6.8. If you are running Linux kernel 3.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-1086 actively exploited?

Yes. CVE-2024-1086 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild with a CVSS score of 7.8 (High severity).

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-2024-1086

High KEV — Actively Exploited

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.

Package Linux Kernel

Published 2024-01-31

Last modified 2025-10-27

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-2024-1086 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 3.15 and later are affected. Fixed in 6.8 and their respective stable series.

Affected from

≥ 3.15

Fixed in

✓ 6.8 6.8.x

References

15 total

Openwall
http://www.openwall.com/lists/oss-security/2024/04/14/1

Exploit Mailing List
Openwall
http://www.openwall.com/lists/oss-security/2024/04/17/5

Exploit Mailing List
GitHub
https://github.com/Notselwyn/CVE-2024-1086

Exploit Third Party Advisory
Pwning
https://pwning.tech/nftables/

Exploit Technical Description Third Party Advisory
CISA
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-1086

US Government Resource

Showing 5 of 15 references View all on NVD

Details

CVE ID CVE-2024-1086

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-01-31

Modified 2025-10-27

KEV Yes

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-1086?

CVE-2024-1086 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 3.15 onward and has been patched in 6.8. CVE-2024-1086 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild.
What is the CVSS score for CVE-2024-1086?

CVE-2024-1086 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-2024-1086?

Yes. CVE-2024-1086 has been patched. Fixed versions include 6.8. If you are running Linux kernel 3.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-1086 actively exploited?

Yes. CVE-2024-1086 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. It carries a CVSS score of 7.8 (High severity).