PT-2025-18561 · Linux+1 · Linux Kernel+1

Published 2022-11-02 · Updated 2025-05-02 · CVE-2022-49844

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

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

Description A vulnerability in the Linux kernel has been resolved, specifically in the CAN (Controller Area Network) device driver. The issue arises from an out-of-bounds read in the priv->ctrlmode element, which occurs even on virtual CAN interfaces that do not create the can priv structure at startup. This can lead to the loss of CAN frames in virtual CAN interfaces such as vcan and vxcan. The patch mainly reverts the original commit and adds a new helper for CAN interface drivers to provide the required information in the can priv structure.

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

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-05947

CVE-2022-49844

Affected Products

Astra Linux

Linux Kernel

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49844.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-49844 · Security Note
• https://git.kernel.org/stable/c/386c49fe31ee748e053860b3bac7794a933ac9ac · Patch
• https://ubuntu.com/security/CVE-2022-49844 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49844 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49844 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49844 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-05947 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-49844 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49844 · Vendor Advisory
• https://git.kernel.org/stable/c/ae64438be1923e3c1102d90fd41db7afcfaf54cc · Patch
• https://git.kernel.org/linus/ae64438be1923e3c1102d90fd41db7afcfaf54cc · Note
• https://twitter.com/CVEnew/status/1917950878402965709 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://access.redhat.com/security/cve/cve-2022-49844 · Note