What is CVE-2026-46277?

CVE-2026-46277 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.19 onward and patched in 7.0.4 and 7.1. CVE-2026-46277 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46277?

CVE-2026-46277 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-2026-46277?

Yes, CVE-2026-46277 has been patched. Fixed versions include 7.0.4 and 7.1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46277 actively exploited?

CVE-2026-46277 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46277

High

In the Linux kernel, the following vulnerability has been resolved: mm/zone_device: do not touch device folio after calling ->folio_free() The contents of a device folio can immediately change after calling ->folio_free(), as the folio may be reallocated by a driver with a different order. Instead of touching the folio again to extract the pgmap, use the local stack variable when calling percpu_ref_put_many().

Package Linux Kernel

Published 2026-06-08

Last modified 2026-07-23

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

Affected versions

Linux kernel versions 6.19 and later are affected. Fixed in 7.0.4, 7.1 and their respective stable series.

Affected from

≥ 6.19

Fixed in

✓ 7.0.4 7.0.x ✓ 7.1

References

2 total

Kernel Git
https://git.kernel.org/stable/c/39928984956037cabd304321cb8f342e47421db5

Patch
Kernel Git
https://git.kernel.org/stable/c/85be0a262e39c706edb53c88af8afde2e98222ba

Patch

Details

CVE ID CVE-2026-46277

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-06-08

Modified 2026-07-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46277?

CVE-2026-46277 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.19 onward and has been patched in 7.0.4 and 7.1. CVE-2026-46277 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46277?

CVE-2026-46277 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-2026-46277?

Yes. CVE-2026-46277 has been patched. Fixed versions include 7.0.4 and 7.1. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46277 actively exploited?

No. CVE-2026-46277 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.