PT-2022-7342 · Linux+2 · Linux Kernel+2

Butt3Rflyh4Ck · Published 2022-10-12 · Updated 2025-04-08 · CVE-2022-3977

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions 5.18 through 6.0

Description A use-after-free flaw was found in the Linux kernel MCTP (Management Component Transport Protocol) functionality. This issue occurs when a user simultaneously calls DROPTAG ioctl and socket close happens, which could allow a local user to crash the system or potentially escalate their privileges on the system. The vulnerability may allow an attacker to impact the confidentiality, integrity, and availability of protected information.

Recommendations For Linux kernel versions 5.18 through 6.0, update to version 6.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the MCTP functionality until a patch is available.

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2022-2848

ALT-PU-2022-2860

ALT-PU-2022-2915

ALT-PU-2022-2919

BDU:2024-03756

CVE-2022-3977

USN-5793-1

USN-5793-2

USN-5793-3

USN-5793-4

Affected Products

Alt Linux

Linux Kernel

Ubuntu

References · 26

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a732b46736cd8a29092e4b0b1a9ba83e672bf89 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5793-2 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-3977 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-3977 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-3977 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-3977 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5793-3 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5793-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-3977 · Security Note
• https://ubuntu.com/security/notices/USN-5793-4 · Vendor Advisory
• https://bdu.fstec.ru/vul/2024-03756 · Security Note
• https://ubuntu.com/security/CVE-2022-3977 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-3977 · Vendor Advisory
• https://kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.2 · Note
• https://git.kernel.org/linus/3a732b46736cd8a29092e4b0b1a9ba83e672bf89 · Note