What is CVE-2026-53336?

CVE-2026-53336 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.4 onward and patched in 6.6.143, 6.12.94, 6.18.36 and others. CVE-2026-53336 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53336?

CVE-2026-53336 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-2026-53336?

Yes, CVE-2026-53336 has been patched. Fixed versions include 6.6.143, 6.12.94, 6.18.36 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53336 actively exploited?

CVE-2026-53336 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-53336

Medium

In the Linux kernel, the following vulnerability has been resolved: nvmem: layouts: onie-tlv: fix hang on unknown types The EEPROM on my board has a vendor specific entry of type 0x41. When stumbling upon that, this driver hangs in an endless loop. Fix it by keep incrementing the offset on unknown entries, so the loop will eventually stop.

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

Affected versions

Linux kernel versions 6.4 and later are affected. Fixed in 6.6.143, 6.12.94, 6.18.36, 7.0.13, 7.1 and their respective stable series.

Affected from

≥ 6.4

Fixed in

✓ 6.6.143 6.6.x ✓ 6.12.94 6.12.x ✓ 6.18.36 6.18.x ✓ 7.0.13 7.0.x ✓ 7.1

References

5 total

Kernel Git
https://git.kernel.org/stable/c/033d498b0f473c6456be5f885be172024ad84972

Patch
Kernel Git
https://git.kernel.org/stable/c/4a4d21f531ccf5bb333d99b620e0d66551f3652c

Patch
Kernel Git
https://git.kernel.org/stable/c/4f27eb01619c36cc8e3ce9a2a9af97f145f5d1c6

Patch
Kernel Git
https://git.kernel.org/stable/c/ea41020b9018e31c2ea7e9d89021e3e6d7470883

Patch
Kernel Git
https://git.kernel.org/stable/c/fd47edeabadfaa75422009dc5894e92c4c697517

Patch

Details

CVE ID CVE-2026-53336

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-2026-53336?

CVE-2026-53336 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.4 onward and has been patched in 6.6.143, 6.12.94, 6.18.36 and others. CVE-2026-53336 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53336?

CVE-2026-53336 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-2026-53336?

Yes. CVE-2026-53336 has been patched. Fixed versions include 6.6.143, 6.12.94, 6.18.36 and others. If you are running Linux kernel 6.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53336 actively exploited?

No. CVE-2026-53336 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.