PT-2024-11101 · Linux · Linux Kernel

Pablo Neira Ayuso · Published 2021-05-05 · Updated 2024-12-06 · CVE-2021-46996

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 issue has been resolved in the Linux kernel, specifically in the netfilter: nftables component. The issue occurred when userdata allocation failed in the error path of new objects, and the object name was not released. This issue has been fixed by releasing the object name if userdata allocation fails.

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

BDU:2025-06530

CVE-2021-46996

Affected Products

Linux Kernel

References · 22

• https://git.kernel.org/stable/c/85dfd816fabfc16e71786eda0a33a7046688b5b0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-46996 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-46996 · Vendor Advisory
• https://git.kernel.org/stable/c/dd3bebf515f336214a91994348a2b86b9a1d3d7f · Patch
• https://ubuntu.com/security/CVE-2021-46996 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-46996 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46996 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06530 · Security Note
• https://git.kernel.org/stable/c/59fa98bfa1f4013d658d990cac88c87b46ff410c · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-46996 · Vendor Advisory
• https://git.kernel.org/stable/c/2c784a500f5edd337258b0fdb2f31bc9abde1a23 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46996 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2024022827-CVE-2021-46996-0af4@gregkh/T/#u · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=2c784a500f5edd337258b0fdb2f31bc9abde1a23 · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=2c784a500f5edd337258b0fdb2f31bc9abde1a23 · Note