CVE-2024-27397

High

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: use timestamp to check for set element timeout Add a timestamp field at the beginning of the transaction, store it in the nftables per-netns area. Update set backend .insert, .deactivate and sync gc path to use the timestamp, this avoids that an element expires while control plane transaction is still unfinished. .lookup and .update, which are used from packet path, still use the current time to check if the element has expired. And .get path and dump also since this runs lockless under rcu read size lock. Then, there is async gc which also needs to check the current time since it runs asynchronously from a workqueue.

Package Linux Kernel
Published 2024-05-14
Last modified 2026-05-12
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

7.0

out of 10
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Vector string
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness type

CWE-416

CVE-2024-27397 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 4.1 and later are affected. Fixed in 4.19.320, 5.4.282, 5.10.224, 5.15.165, 6.1.97, 6.6.84, 6.7.5, 6.8 and their respective stable series.

Affected from
≥ 4.1
Fixed in
✓ 4.19.320 4.19.x ✓ 5.4.282 5.4.x ✓ 5.10.224 5.10.x ✓ 5.15.165 5.15.x ✓ 6.1.97 6.1.x ✓ 6.6.84 6.6.x ✓ 6.7.5 6.7.x ✓ 6.8

References

11 total
Showing 5 of 11 references View all on NVD

Frequently asked questions

  • What is CVE-2024-27397?

    CVE-2024-27397 is a High severity Linux kernel vulnerability with a CVSS score of 7.0 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 4.1 onward and has been patched in 4.19.320, 5.4.282, 5.10.224 and others. CVE-2024-27397 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2024-27397?

    CVE-2024-27397 has a CVSS score of 7.0 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H .

  • Is there a patch available for CVE-2024-27397?

    Yes. CVE-2024-27397 has been patched. Fixed versions include 4.19.320, 5.4.282, 5.10.224 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2024-27397 actively exploited?

    No. CVE-2024-27397 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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