CVE-2026-23429

HIGHNVD 7.85.5▼

7.8

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().

CVSS v3: 7.8
EG Score: 5.5(medium)
EPSS: 3.4%
KEV: Not listed

Published

April 3, 2026

Last Modified

April 27, 2026

References (3)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06e14c36e20b48171df13d51b89fe67c594ed07a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/58abeb7b9562f25bdfa2f5ae5ce803eb02e74433
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f5daaa2c959d9f894fb5b1ab76da8612dd220a0d

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2026-23429?

CVE-2026-23429 is a high vulnerability published on April 3, 2026. In the Linux kernel, the following vulnerability has been resolved: iommu/sva: Fix crash in iommusvaunbind_device() domain->mm->iommumm can be freed by iommudomain_free(): iommudomainfree() mmdrop() mmdrop() mmpasiddrop() After iommudomainfree() returns, accessing domain->mm->iommu_mm may…

When was CVE-2026-23429 disclosed?

CVE-2026-23429 was first published in the National Vulnerability Database on April 3, 2026, with the most recent update on April 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-23429 actively exploited?

CVE-2026-23429 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

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

CVE-2026-23429 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 5.5.

How do I remediate CVE-2026-23429?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23429, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-23429

📅 Published

🔄 Last Modified

🔗 References (3)