PT-2020-7004 · Linux+1 · Linux Kernel+1

Published 2020-12-21 · Updated 2024-12-11 · CVE-2020-36787

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 The issue is related to the Linux kernel's media subsystem, specifically the Aspeed video driver. It introduces improper reset on the Video Engine hardware, causing unexpected DMA memory transfers that can corrupt memory regions in random and sporadic patterns. This issue is observed very rarely on some specific AST2500 SoCs but causes a critical kernel panic, making it extremely hard to debug. The problem occurs even when the video engine is not actively used because udevd turns on the video engine hardware for a short time to make a query in every boot.

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

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-00833

CVE-2020-36787

Affected Products

Astra Linux

Linux Kernel

References · 18

• https://nvd.nist.gov/vuln/detail/CVE-2020-36787 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-36787 · Vendor Advisory
• https://git.kernel.org/stable/c/75321dc8aebe3f30eff226028fe6da340fe0bf02 · Patch
• https://security-tracker.debian.org/tracker/CVE-2020-36787 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-36787 · Vendor Advisory
• https://git.kernel.org/stable/c/2964c37563e86cfdc439f217eb3c5a69adfdba6a · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-36787 · Vendor Advisory
• https://git.kernel.org/stable/c/a59d01384c80a8a4392665802df57c3df20055f5 · Patch
• https://bdu.fstec.ru/vul/2025-00833 · Security Note
• https://osv.dev/vulnerability/CVE-2020-36787 · Vendor Advisory
• https://git.kernel.org/stable/c/3536169f8531c2c5b153921dc7d1ac9fd570cda7 · Patch
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-36787 · Security Note
• https://git.kernel.org/stable/c/1dc1d30ac101bb8335d9852de2107af60c2580e7 · Patch
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3536169f8531c2c5b153921dc7d1ac9fd570cda7 · Note