What is CVE-2026-23429?

CVE-2026-23429 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.18.7 onward and patched in 6.18.20, 6.19.10 and 7.0. CVE-2026-23429 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23429?

CVE-2026-23429 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-2026-23429?

Yes, CVE-2026-23429 has been patched. Fixed versions include 6.18.20, 6.19.10 and 7.0. If you are running Linux kernel 6.18.7 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23429 actively exploited?

CVE-2026-23429 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23429

Medium

In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Fix crash in iommu_sva_unbind_device() domain->mm->iommu_mm can be freed by iommu_domain_free(): iommu_domain_free() mmdrop() __mmdrop() mm_pasid_drop() After iommu_domain_free() returns, accessing domain->mm->iommu_mm may dereference a freed mm structure, leading to a crash. Fix this by moving the code that accesses domain->mm->iommu_mm to before the call to iommu_domain_free().

Package Linux Kernel

Published 2026-04-03

Last modified 2026-04-27

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 6.18.7, 6.19 and later are affected. Fixed in 6.18.20, 6.19.10, 7.0 and their respective stable series.

Affected from

≥ 6.18.7 ≥ 6.19

Fixed in

✓ 6.18.20 6.18.x ✓ 6.19.10 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-23429 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/06e14c36e20b48171df13d51b89fe67c594ed07a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/58abeb7b9562f25bdfa2f5ae5ce803eb02e74433
Patch
Kernel patch commit
https://git.kernel.org/stable/c/f5daaa2c959d9f894fb5b1ab76da8612dd220a0d
Patch

Details

CVE ID CVE-2026-23429

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-04-03

Modified 2026-04-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23429?

CVE-2026-23429 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.18.7 onward and has been patched in 6.18.20, 6.19.10 and 7.0. CVE-2026-23429 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23429?

CVE-2026-23429 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-2026-23429?

Yes — CVE-2026-23429 has been patched. Fixed versions include 6.18.20, 6.19.10 and 7.0. If you are running Linux kernel 6.18.7 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23429 actively exploited?

No — CVE-2026-23429 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.