What is CVE-2026-46093?

CVE-2026-46093 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.9 onward and patched in 6.18.27, 7.0.4 and 7.1-rc1. CVE-2026-46093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46093?

CVE-2026-46093 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-2026-46093?

Yes, CVE-2026-46093 has been patched. Fixed versions include 6.18.27, 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46093 actively exploited?

CVE-2026-46093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46093

High

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: take vmap_purge_lock in shrinker decay_va_pool_node() can be invoked concurrently from two paths: __purge_vmap_area_lazy() when pools are being purged, and the shrinker via vmap_node_shrink_scan(). However, decay_va_pool_node() is not safe to run concurrently, and the shrinker path currently lacks serialization, leading to races and possible leaks. Protect decay_va_pool_node() by taking vmap_purge_lock in the shrinker path to ensure serialization with purge users.

Package Linux Kernel

Published 2026-05-27

Last modified 2026-05-30

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 6.9 and later are affected. Fixed in 6.18.27, 7.0.4, 7.1-rc1 and their respective stable series.

Affected from

≥ 6.9

Fixed in

✓ 6.18.27 6.18.x ✓ 7.0.4 7.0.x ✓ 7.1-rc1

References

The following references provide additional information about CVE-2026-46093 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/12f2341b4c235d5593a433abac201c1c6725787f
Patch
Kernel patch commit
https://git.kernel.org/stable/c/687ccdf582169cd680aeaf24cc953807c4cd4345
Patch
Kernel patch commit
https://git.kernel.org/stable/c/ec05f51f1e65bce95528543eb73fda56fd201d94
Patch

Details

CVE ID CVE-2026-46093

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-27

Modified 2026-05-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46093?

CVE-2026-46093 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.9 onward and has been patched in 6.18.27, 7.0.4 and 7.1-rc1. CVE-2026-46093 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46093?

CVE-2026-46093 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-2026-46093?

Yes — CVE-2026-46093 has been patched. Fixed versions include 6.18.27, 7.0.4 and 7.1-rc1. If you are running Linux kernel 6.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46093 actively exploited?

No — CVE-2026-46093 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.