What is CVE-2024-27393?

CVE-2024-27393 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 5.9 onward and patched in 5.15.154, 6.1.85, 6.6.26 and others. CVE-2024-27393 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-27393?

CVE-2024-27393 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2024-27393?

Yes, CVE-2024-27393 has been patched. Fixed versions include 5.15.154, 6.1.85, 6.6.26 and others. If you are running Linux kernel 5.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-27393 actively exploited?

CVE-2024-27393 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2024-27393

Medium

In the Linux kernel, the following vulnerability has been resolved: xen-netfront: Add missing skb_mark_for_recycle Notice that skb_mark_for_recycle() is introduced later than fixes tag in commit 6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling"). It is believed that fixes tag were missing a call to page_pool_release_page() between v5.9 to v5.14, after which is should have used skb_mark_for_recycle(). Since v6.6 the call page_pool_release_page() were removed (in commit 535b9c61bdef ("net: page_pool: hide page_pool_release_page()") and remaining callers converted (in commit 6bfef2ec0172 ("Merge branch 'net-page_pool-remove-page_pool_release_page'")). This leak became visible in v6.8 via commit dba1b8a7ab68 ("mm/page_pool: catch page_pool memory leaks").

Package Linux Kernel

Published 2024-05-14

Last modified 2025-04-08

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-401

CVE-2024-27393 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.9 and later are affected. Fixed in 5.15.154, 6.1.85, 6.6.26, 6.8.5, 6.9 and their respective stable series.

Affected from

≥ 5.9

Fixed in

✓ 5.15.154 5.15.x ✓ 6.1.85 6.1.x ✓ 6.6.26 6.6.x ✓ 6.8.5 6.8.x ✓ 6.9

References

7 total

Kernel Git
https://git.kernel.org/stable/c/037965402a010898d34f4e35327d22c0a95cd51f

Patch
Kernel Git
https://git.kernel.org/stable/c/27aa3e4b3088426b7e34584274ad45b5afaf7629

Patch
Kernel Git
https://git.kernel.org/stable/c/4143b9479caa29bb2380f3620dcbe16ea84eb3b1

Patch
Kernel Git
https://git.kernel.org/stable/c/7c1250796b6c262b505a46192f4716b8c6a6a8c6

Patch
Kernel Git
https://git.kernel.org/stable/c/c8b7b2f158d9d4fb89cd2f68244af154f7549bb4

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2024-27393

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-14

Modified 2025-04-08

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-27393?

CVE-2024-27393 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 5.9 onward and has been patched in 5.15.154, 6.1.85, 6.6.26 and others. CVE-2024-27393 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-27393?

CVE-2024-27393 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2024-27393?

Yes. CVE-2024-27393 has been patched. Fixed versions include 5.15.154, 6.1.85, 6.6.26 and others. If you are running Linux kernel 5.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-27393 actively exploited?

No. CVE-2024-27393 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.