Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2026-23429

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/04/2026
Last modified:
27/04/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.18.7 (including) 6.18.20 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19.1 (including) 6.19.10 (excluding)
cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools