PT-2025-18525 · Linux +1 · Linux Kernel +1

Published 2025-05-01 · Updated 2025-05-02 · CVE-2022-49808

Positive Technologies · (AI Summary)

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

Description A vulnerability in the Linux kernel has been resolved, related to the DSA (Distributed Switch Architecture) network driver. The issue was caused by a leak of tagger-owned storage when the switch driver was unbound. This problem arose from a change in the way the driver connected to individual switches within a tree, which led to the normal driver teardown code path not being replaced. To solve this issue, a function was added to perform the opposite of

dsa switch setup tag protocol()

, ensuring that tagger-owned storage is properly freed during driver teardown. The teardown sequence is designed to prevent use-after-free issues in tagging protocol operations.

Recommendations To resolve this issue, update the Linux kernel to a version that includes the fix for this vulnerability. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Related Identifiers

CVE-2022-49808

Affected Products

Astra Linux

Linux Kernel

References · 14

• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49808 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49808 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49808 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49808 · Vendor Advisory
• https://wiki.astralinux.ru/pages/viewpage.action?pageId=158612043 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49808 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49808 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49808 · Vendor Advisory
• https://git.kernel.org/stable/c/4e0c19fcb8b5323716140fa82b79aa9f60e60407 · Note
• https://git.kernel.org/linus/4e0c19fcb8b5323716140fa82b79aa9f60e60407 · Note
• https://git.kernel.org/stable/c/5809fb03942dbac25144db5bebea84fa003ecaca · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-49808 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://twitter.com/CVEnew/status/1918014623954980887 · Twitter Post