CVE-2021-47420

MEDIUM

Linux Kernel 5.14-5.14.12 - Use-After-Free in DRM AMDKFD TTM SG Memory Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix a potential ttm->sg memory leak Memory is allocated for ttm->sg by kmalloc in kfd_mem_dmamap_userptr, but isn't freed by kfree in kfd_mem_dmaunmap_userptr. Free it!

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/7e5ce6029b627efb4a004746cfdc1eeff850e6eb

Patch

https://git.kernel.org/stable/c/b072ef1215aca33186e3a10109e872e528a9e516

Scores

CVSS v3 5.5

EPSS 0.0019

EPSS Percentile 9.2%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-401

Status published

Products (8)

Linux/Linux < 5.14

Linux/Linux 264fb4d332f5e76743818480e482464437837c52 - 7e5ce6029b627efb4a004746cfdc1eeff850e6eb

Linux/Linux 264fb4d332f5e76743818480e482464437837c52 - b072ef1215aca33186e3a10109e872e528a9e516

Linux/Linux 5.14

Linux/Linux 5.14.12 - 5.14.*

Linux/Linux 5.15

linux/linux_kernel 5.15 rc1 (4 CPE variants)

linux/linux_kernel 5.14 - 5.14.12

Published May 21, 2024

Tracked Since Feb 18, 2026