PT-2024-11416 · Linux+2 · Linux Kernel+2

Lang Yu · Published 2021-09-29 · Updated 2024-12-30 · CVE-2021-47420

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 potential memory leak has been identified in the Linux kernel, specifically in the drm/amdkfd module. The issue arises from the allocation of memory for ttm->sg by kmalloc in kfd mem dmamap userptr, which is not freed by kfree in kfd mem dmaunmap userptr. This results in a memory leak.

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:2025-03656

CVE-2021-47420

OPENSUSE-SU-2024_2189-1

SUSE-SU-2024:2008-1

SUSE-SU-2024:2011-1

SUSE-SU-2024:2019-1

SUSE-SU-2024:2189-1

SUSE-SU-2024:2190-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1246

• https://nvd.nist.gov/vuln/detail/CVE-2021-47420 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2019-1 · Vendor Advisory
• https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2190-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47420 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47420 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47420 · Vendor Advisory
• https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb · Patch
• https://bdu.fstec.ru/vul/2025-03656 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:2008-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47420 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47420 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47420 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2189-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2011-1 · Vendor Advisory