What is CVE-2026-53335?

CVE-2026-53335 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 6.18 onward and patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-53335 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53335?

CVE-2026-53335 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-2026-53335?

Yes, CVE-2026-53335 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53335 actively exploited?

CVE-2026-53335 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2026-53335

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/damon/lru_sort: handle ctx allocation failure DAMON_LRU_SORT allocates the damon_ctx object for its kdamond in its init function. damon_lru_sort_enabled_store() wrongly assumes the allocation will always succeed once tried. If the damon_ctx allocation was failed, therefore, code execution reaches to damon_commit_ctx() while 'ctx' is NULL. As a result, it dereferences the NULL 'ctx' pointer. Avoid the NULL dereference by returning -ENOMEM if 'ctx' is NULL.

Package Linux Kernel

Published 2026-07-01

Last modified 2026-07-23

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-476

CVE-2026-53335 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.18 and later are affected. Fixed in 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 6.18

Fixed in

✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

3 total

Kernel Git
https://git.kernel.org/stable/c/6d48f15659395bf1381114f01be91bc68e0be46a

Patch
Kernel Git
https://git.kernel.org/stable/c/ab04340b5ae5d52c1d46b750538febcde9d889e7

Patch
Kernel Git
https://git.kernel.org/stable/c/daab1996431a71f43219dcac48ecc9ad2aad3f1c

Patch

Details

CVE ID CVE-2026-53335

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-07-01

Modified 2026-07-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53335?

CVE-2026-53335 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 6.18 onward and has been patched in 6.18.36, 7.0.13 and 7.1. CVE-2026-53335 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53335?

CVE-2026-53335 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-2026-53335?

Yes. CVE-2026-53335 has been patched. Fixed versions include 6.18.36, 7.0.13 and 7.1. If you are running Linux kernel 6.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53335 actively exploited?

No. CVE-2026-53335 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.