PT-2026-30037 · Btrfs+1 · Btrfs+1

Published 2026-04-03 · Updated 2026-04-03 · CVE-2026-23423

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 memory management within the btrfs uring read extent() function. Specifically, the pages object may not be freed under certain error conditions, potentially leading to memory leaks. This occurs when allocations fail or when btrfs encoded read regular fill pages() does not return -EIOCBQUEUED, causing the cleanup section to execute without proper deferred execution handling.

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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

CVE-2026-23423

Affected Products

Linux Kernel

Btrfs

References · 13

• https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07 · Patch
• https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343 · Patch
• https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64 · Patch
• https://ubuntu.com/security/CVE-2026-23423 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-23423 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23423 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-23423 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-23423 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23423 · Vendor Advisory
• https://twitter.com/CVEnew/status/2040111916539072992 · Twitter Post
• https://twitter.com/infoflowcloud/status/2040113546403455326 · Twitter Post
• https://git.kernel.org/linus/3f501412f2079ca14bf68a18d80a2b7a823f1f64 · Note
• https://twitter.com/VulmonFeeds/status/2040092057155281074 · Twitter Post