What is CVE-2024-27396?

CVE-2024-27396 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 4.19.93 onward and patched in 4.19.313, 5.4.275, 5.10.216 and others. CVE-2024-27396 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27396?

CVE-2024-27396 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-2024-27396?

Yes, CVE-2024-27396 has been patched. Fixed versions include 4.19.313, 5.4.275, 5.10.216 and others. If you are running Linux kernel 4.19.93 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27396 actively exploited?

CVE-2024-27396 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-2024-27396

High

In the Linux kernel, the following vulnerability has been resolved: net: gtp: Fix Use-After-Free in gtp_dellink Since call_rcu, which is called in the hlist_for_each_entry_rcu traversal of gtp_dellink, 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-2024-27396 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 4.19.93, 5.4.8, 4.14.162, 5.5 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

≥ 4.19.93 ≥ 5.4.8 ≥ 4.14.162 ≥ 5.5

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/07b20d0a3dc13fb1adff10b60021a4924498da58

Patch
Kernel Git
https://git.kernel.org/stable/c/0caff3e6390f840666b8dc1ecebf985c2ef3f1dd

Patch
Kernel Git
https://git.kernel.org/stable/c/25a1c2d4b1fcf938356a9688a96a6456abd44b29

Patch
Kernel Git
https://git.kernel.org/stable/c/2aacd4de45477582993f8a8abb9505a06426bfb6

Patch
Kernel Git
https://git.kernel.org/stable/c/2e74b3fd6bf542349758f283676dff3660327c07

Patch

Showing 5 of 12 references View all on NVD

Details

CVE ID CVE-2024-27396

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-2024-27396?

CVE-2024-27396 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 4.19.93 onward and has been patched in 4.19.313, 5.4.275, 5.10.216 and others. CVE-2024-27396 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27396?

CVE-2024-27396 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-2024-27396?

Yes. CVE-2024-27396 has been patched. Fixed versions include 4.19.313, 5.4.275, 5.10.216 and others. If you are running Linux kernel 4.19.93 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27396 actively exploited?

No. CVE-2024-27396 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.