PT-2025-53041 · Linux · Linux Kernel

Published 2025-12-24 · Updated 2025-12-26 · CVE-2023-54043

Positive Technologies (AI Summary)

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

Description The Linux kernel contains a flaw within the iommufd subsystem where the same hardware-assisted page table (hwpt) could be added to the ioas->hwpt list multiple times. This double addition corrupts the linked list in certain scenarios. The issue stems from a leftover from rework in the code and does not affect the test suite due to limitations in creating a legitimate struct device with a non-system iommu driver.

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

Exploit

Related Identifiers

CVE-2023-54043

RHSA-2023:6583

Affected Products

Linux Kernel

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54043.json · Exploit
• https://ubuntu.com/security/CVE-2023-54043 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-54043 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2023-54043 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-54043 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-54043 · Security Note
• https://osv.dev/vulnerability/CVE-2023-54043 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2025122422-CVE-2023-54043-16c8@gregkh/T · Note
• https://twitter.com/CVEnew/status/2004457801318613198 · Twitter Post
• https://docs.bell-sw.com/security/cves/CVE-2023-54043 · Note
• https://git.kernel.org/stable/c/c44adefdcf472f946f0632f4e0ddcbf3e00b8516 · Note
• https://git.kernel.org/stable/c/b4ff830eca097df51af10a9be29e8cc817327919 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note