PT-2024-2973 · Linux+2 · Linux Kernel+2

Published 2024-02-27 · Updated 2024-08-19 · CVE-2021-46919

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 dmaengine component, specifically the idxd module, in the Linux kernel. It allows changes to be made when the device is enabled but the wq (work queue) is disabled. The current code permits this change, but it should only be allowed when the device is disabled. The vulnerability can potentially allow an attacker to execute arbitrary code.

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

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2024-03142

CVE-2021-46919

OPENSUSE-SU-2024_1489-1

SUSE-SU-2024:1465-1

SUSE-SU-2024:1489-1

Affected Products

Linux Kernel

Red Os

Suse

References · 343

• 🔥 https://github.com/Kakashiiiiy/CVE-2021-29155 · Exploit
• 🔥 https://github.com/benschlueter/CVE-2021-29155 · Exploit
• https://cve.org/CVERecord?id=CVE-2021-46919 · Security Note
• https://git.kernel.org/stable/c/0fff71c5a311e1264988179f7dcc217fda15fadd · Patch
• https://git.kernel.org/stable/c/4ecf25595273203010bc8318c4aee60ad64037ae · Patch
• https://osv.dev/vulnerability/CVE-2021-46919 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1489-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-46919 · Vendor Advisory
• https://git.kernel.org/stable/c/05b7791c4c4aa8304368fdc55ae911f6b34e7281 · Patch
• https://ubuntu.com/security/CVE-2021-46919 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46919 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-46919 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:1465-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46919 · Security Note
• https://bdu.fstec.ru/vul/2024-03142 · Security Note