PT-2026-30124 · Linux · Linux Kernel

Published 2026-04-03 · Updated 2026-04-03 · CVE-2026-23429

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel where accessing a memory structure after it has been freed can lead to a system crash. Specifically, the iommu sva unbind device() function can cause a crash if domain->mm->iommu mm is accessed after being freed by iommu domain free(). This occurs because the code accessing the memory structure is executed after the memory has been released.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2026-23429

Affected Products

Linux Kernel

References · 11

• https://git.kernel.org/stable/c/06e14c36e20b48171df13d51b89fe67c594ed07a · Patch
• https://ubuntu.com/security/CVE-2026-23429 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23429 · Vendor Advisory
• https://git.kernel.org/stable/c/f5daaa2c959d9f894fb5b1ab76da8612dd220a0d · Patch
• https://cve.org/CVERecord?id=CVE-2026-23429 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23429 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23429 · Security Note
• https://git.kernel.org/stable/c/58abeb7b9562f25bdfa2f5ae5ce803eb02e74433 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-23429 · Vendor Advisory
• https://git.kernel.org/linus/06e14c36e20b48171df13d51b89fe67c594ed07a · Note
• https://twitter.com/CVEnew/status/2040111904757256385 · Twitter Post