What is CVE-2024-26630?

CVE-2024-26630 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.5 onward and patched in 6.6.21, 6.7.9 and 6.8. CVE-2024-26630 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2024-26630?

CVE-2024-26630 has a CVSS score of 7.1 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:N/A:H.

Is there a patch available for CVE-2024-26630?

Yes, CVE-2024-26630 has been patched. Fixed versions include 6.6.21, 6.7.9 and 6.8. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2024-26630 actively exploited?

CVE-2024-26630 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-2024-26630

High

In the Linux kernel, the following vulnerability has been resolved: mm: cachestat: fix folio read-after-free in cache walk In cachestat, we access the folio from the page cache's xarray to compute its page offset, and check for its dirty and writeback flags. However, we do not hold a reference to the folio before performing these actions, which means the folio can concurrently be released and reused as another folio/page/slab. Get around this altogether by just using xarray's existing machinery for the folio page offsets and dirty/writeback states. This changes behavior for tmpfs files to now always report zeroes in their dirty and writeback counters. This is okay as tmpfs doesn't follow conventional writeback cache behavior: its pages get "cleaned" during swapout, after which they're no longer resident etc.

Package Linux Kernel

Published 2024-03-13

Last modified 2025-03-13

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2024-26630 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 6.5 and later are affected. Fixed in 6.6.21, 6.7.9, 6.8 and their respective stable series.

Affected from

≥ 6.5

Fixed in

✓ 6.6.21 6.6.x ✓ 6.7.9 6.7.x ✓ 6.8

References

3 total

Kernel Git
https://git.kernel.org/stable/c/3a75cb05d53f4a6823a32deb078de1366954a804

Patch
Kernel Git
https://git.kernel.org/stable/c/ba60fdf75e89ea762bb617be578dc47f27655117

Patch
Kernel Git
https://git.kernel.org/stable/c/fe7e008e0ce728252e4ec652cceebcc62211657c

Patch

Details

CVE ID CVE-2024-26630

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-03-13

Modified 2025-03-13

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2024-26630?

CVE-2024-26630 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.5 onward and has been patched in 6.6.21, 6.7.9 and 6.8. CVE-2024-26630 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2024-26630?

CVE-2024-26630 has a CVSS score of 7.1 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:N/A:H.
Is there a patch available for CVE-2024-26630?

Yes. CVE-2024-26630 has been patched. Fixed versions include 6.6.21, 6.7.9 and 6.8. If you are running Linux kernel 6.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2024-26630 actively exploited?

No. CVE-2024-26630 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.