What is CVE-2024-27395?

CVE-2024-27395 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 4.18 onward and patched in 4.19.313, 5.4.275, 5.10.216 and others. CVE-2024-27395 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27395?

CVE-2024-27395 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-2024-27395?

Yes, CVE-2024-27395 has been patched. Fixed versions include 4.19.313, 5.4.275, 5.10.216 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27395 actively exploited?

CVE-2024-27395 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-2024-27395

High

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: Fix Use-After-Free in ovs_ct_exit Since kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal of ovs_ct_limit_exit, is not part of the RCU read critical section, it is possible that the RCU grace period will pass during the traversal and the key will be free. To prevent this, it should be changed to hlist_for_each_entry_safe.

Package Linux Kernel

Published 2024-05-14

Last modified 2026-05-12

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-2024-27395 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 4.18 and later are affected. Fixed in 4.19.313, 5.4.275, 5.10.216, 5.15.158, 6.1.90, 6.6.30, 6.8.9, 6.9 and their respective stable series.

Affected from

≥ 4.18

Fixed in

✓ 4.19.313 4.19.x ✓ 5.4.275 5.4.x ✓ 5.10.216 5.10.x ✓ 5.15.158 5.15.x ✓ 6.1.90 6.1.x ✓ 6.6.30 6.6.x ✓ 6.8.9 6.8.x ✓ 6.9

References

12 total

Kernel Git
https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994

Patch
Kernel Git
https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3

Patch
Kernel Git
https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424

Patch
Kernel Git
https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2

Patch
Kernel Git
https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4

Patch

Showing 5 of 12 references View all on NVD

Details

CVE ID CVE-2024-27395

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-14

Modified 2026-05-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27395?

CVE-2024-27395 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 4.18 onward and has been patched in 4.19.313, 5.4.275, 5.10.216 and others. CVE-2024-27395 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27395?

CVE-2024-27395 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-2024-27395?

Yes. CVE-2024-27395 has been patched. Fixed versions include 4.19.313, 5.4.275, 5.10.216 and others. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27395 actively exploited?

No. CVE-2024-27395 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.