PT-2024-2975 · Linux+2 · Linux Kernel+2

Shreenivaas Devarajan · Published 2024-02-27 · Updated 2024-08-19 · CVE-2021-46917

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the idxd component of the Linux kernel, where a pre-release silicon erratum workaround was leaked into upstream code, causing the WQCFG registers not to be cleared during wq reset. This can lead to unauthorized access to protected information. The problem is addressed by using the wq reset command instead of blasting the MMIO region, which also fixes an issue where registers in future devices are clobbered.

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

Exploit

Exposure of Resource to Wrong Sphere

Weakness Enumeration

CWE-668

Related Identifiers

BDU:2024-03144

CVE-2021-46917

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://git.kernel.org/stable/c/ea9aadc06a9f10ad20a90edc0a484f1147d88a7a · Patch
• https://osv.dev/vulnerability/CVE-2021-46917 · Vendor Advisory
• https://git.kernel.org/stable/c/f7dc8f5619165e1fa3383d0c2519f502d9e2a1a9 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:1489-1 · Vendor Advisory
• https://git.kernel.org/stable/c/e5eb9757fe4c2392e069246ae78badc573af1833 · Patch
• https://bdu.fstec.ru/vul/2024-03144 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-46917 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46917 · Security Note
• https://ubuntu.com/security/CVE-2021-46917 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-46917 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-46917 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2024:1465-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-46917 · Vendor Advisory