PT-2026-43912 · Linux · Linux Kernel

Published 2026-05-27 · Updated 2026-06-04 · CVE-2026-46045

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 An issue exists in the md/md-llbitmap component where the system fails to check the In sync flag when reading bitmap pages from member disks. The code iterates through all rdevs and reads from the first available one, verifying only the raid disk assignment and the Faulty flag. This allows bitmap data to be read from spare disks that are still being rebuilt and lack valid bitmap information. Reading stale or uninitialized data can result in incorrect dirty bit tracking, which may lead to data corruption during normal operation or recovery.

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

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-46045

OPENSUSE-SU-2026:10954-1

Affected Products

Linux Kernel

References · 285

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-46045 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10954-1 · Vendor Advisory
• https://git.kernel.org/stable/c/98623c7e2a51eab1833c8628d33fa9c6ef3ce325 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-46045 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-46045 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-46045 · Vendor Advisory
• https://git.kernel.org/stable/c/7701e68b5072faa03a8f30b4081dc16df9092381 · Patch
• https://git.kernel.org/stable/c/3115fa2f62970d98f2a639145fb8e2767db8bbf9 · Patch
• https://cve.org/CVERecord?id=CVE-2026-46045 · Security Note
• https://ubuntu.com/security/CVE-2026-46045 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-46092 · Note
• https://suse.com/security/cve/CVE-2026-46049 · Note
• https://suse.com/security/cve/CVE-2026-46155 · Note
• https://suse.com/security/cve/CVE-2026-46208 · Note
• https://suse.com/security/cve/CVE-2026-46127 · Note