What is CVE-2026-43063?

CVE-2026-43063 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, affecting Linux kernel versions from 6.10 onward and patched in 6.12.80, 6.18.21, 6.19.11 and others. CVE-2026-43063 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-43063?

CVE-2026-43063 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:N/UI:R/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2026-43063?

Yes, CVE-2026-43063 has been patched. Fixed versions include 6.12.80, 6.18.21, 6.19.11 and others. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-43063 actively exploited?

CVE-2026-43063 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-43063

High

In the Linux kernel, the following vulnerability has been resolved: xfs: don't irele after failing to iget in xfs_attri_recover_work xlog_recovery_iget* never set @ip to a valid pointer if they return an error, so this irele will walk off a dangling pointer. Fix that.

Package Linux Kernel

Published 2026-05-05

Last modified 2026-05-29

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

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 6.10 and later are affected. Fixed in 6.12.80, 6.18.21, 6.19.11, 7.0 and their respective stable series.

Affected from

≥ 6.10

Fixed in

✓ 6.12.80 6.12.x ✓ 6.18.21 6.18.x ✓ 6.19.11 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-43063 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/40082d08b638485cbaa543dc8087a3d1844d6f08
Patch
Kernel patch commit
https://git.kernel.org/stable/c/70685c291ef82269180758130394ecdc4496b52c
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a1a5df1038f0b3c560d204270373621a4e622808
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2026-43063

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2026-05-05

Modified 2026-05-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-43063?

CVE-2026-43063 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . It affects Linux kernel versions from 6.10 onward and has been patched in 6.12.80, 6.18.21, 6.19.11 and others. CVE-2026-43063 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-43063?

CVE-2026-43063 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:N/UI:R/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2026-43063?

Yes — CVE-2026-43063 has been patched. Fixed versions include 6.12.80, 6.18.21, 6.19.11 and others. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-43063 actively exploited?

No — CVE-2026-43063 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.