PT-2024-11153 · Linux · Linux Kernel

Published 2021-05-19 · Updated 2024-11-06 · CVE-2021-47075

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

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. The problem occurs when creating a control in nvmet alloc ctrl(), where if cntlid min is larger than cntlid max of the subsystem, the code jumps to the "out free changed ns list" label but fails to free ctrl->sqs. This issue is fixed by jumping to the "out free sqs" label instead.

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

Memory Leak

Weakness Enumeration

CWE-402

CWE-401

Related Identifiers

BDU:2025-07272

CVE-2021-47075

Affected Products

Linux Kernel

References · 20

• https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a · Patch
• https://git.kernel.org/stable/c/4720f29acb3fe67aa8aa71e6b675b079d193aaeb · Patch
• https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47075 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47075 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47075 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47075 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47075 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-07272 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47075 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47075 · Security Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=4720f29acb3fe67aa8aa71e6b675b079d193aaeb · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.7 · Note
• https://lore.kernel.org/linux-cve-announce/2024030142-CVE-2021-47075-8d12@gregkh · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40 · Note