PT-2026-4669 · Linux · Linux Kernel

Published 2026-01-01 · Updated 2026-03-13 · CVE-2026-23007

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description A flaw exists in the Linux kernel related to the initialization of the auto-generated integrity buffer for writes. Specifically, when protection information is generated and the metadata size exceeds the PI tuple size, the remaining portion of the integrity buffer remains uninitialized. This could allow userspace or individuals with physical access to the storage device to read uninitialized memory.

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

Exploit

Access of Uninitialized Pointer

Use of Uninitialized Resource

Weakness Enumeration

CWE-824

CWE-908

Related Identifiers

BDU:2026-04472

CVE-2026-23007

Affected Products

Linux Kernel

References · 19

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23007.json · Exploit
• https://git.kernel.org/stable/c/d6072557b90e0c557df319a56f4a9dc482706d2c · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-23007 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-23007 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04472 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23007 · Vendor Advisory
• https://git.kernel.org/stable/c/ca22c566b89164f6e670af56ecc45f47ef3df819 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23007 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2026-23007 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2026-23007 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23007 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23007 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-23007 · Security Note
• https://access.redhat.com/security/cve/cve-2026-23007 · Note
• https://t.me/CVEtracker/42968 · Telegram Post