PT-2026-36458 · Linux · Linux Kernel

Published 2026-05-01 · Updated 2026-05-02 · CVE-2026-43041

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 memory leak exists in the qrtr tx flow component. The radix tree create() function allocates and links intermediate nodes into the tree sequentially. If a subsequent allocation fails, previously linked nodes remain in the tree without a corresponding leaf entry. These orphaned internal nodes are not reclaimed because radix tree for each slot() only visits slots containing leaf values.

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-2026-43041

ECHO-CFF0-8E4E-B207

Affected Products

Linux Kernel

References · 18

• https://git.kernel.org/stable/c/4b75ff0aedd6ade1018ad4a3a9d8336794e36e42 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43041 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43041 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43041 · Vendor Advisory
• https://git.kernel.org/stable/c/0fda873092b541bb5a9b87d728a2429f863f8cfa · Patch
• https://git.kernel.org/stable/c/69402908e277dd164bf8d7c8fd0513c0fac28e9e · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43041 · Vendor Advisory
• https://git.kernel.org/stable/c/2428083101f6883f979cceffa76cd8440751ffe6 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43041 · Security Note
• https://git.kernel.org/stable/c/f2dd9aaf6e2861337f5835f877a5b2becaf4b015 · Patch
• https://git.kernel.org/stable/c/ff134cc43972d7ddceff8cfd36cf6b9eaafc00b3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-43041 · Security Note
• https://git.kernel.org/stable/c/5d2249eefaca59908fe3c264b8eca526424dcfbe · Patch
• https://ubuntu.com/security/CVE-2026-43041 · Vendor Advisory
• https://git.kernel.org/stable/c/f2664bc4f0f356f17c2094587a2b3665e3867e44 · Patch