PT-2026-37559 · Linux · Linux Kernel

Published 2026-05-06 · Updated 2026-05-26 · CVE-2026-43219

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 A flaw exists in the cpsw new component of the Linux kernel. An error during the register netdev() process for the first MAC in cpsw register ports() could lead to a situation where cpsw unregister ports() attempts to unregister a second MAC that was not properly registered. This occurs because the system may attempt to unregister a network device (netdev) before it has been successfully registered.

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

Related Identifiers

CVE-2026-43219

Affected Products

Linux Kernel

References · 14

• https://nvd.nist.gov/vuln/detail/CVE-2026-43219 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43219 · Vendor Advisory
• https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43219 · Vendor Advisory
• https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5 · Patch
• https://cve.org/CVERecord?id=CVE-2026-43219 · Security Note
• https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-43219 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2204-CVE-2026-43219 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43219 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-43219 · Vendor Advisory
• https://twitter.com/windowsforum/status/2052320722589020366 · Twitter Post
• https://git.kernel.org/linus/9d724b34fbe13b71865ad0906a4be97571f19cf5 · Note
• https://docs.bell-sw.com/security/cves/CVE-2026-43219 · Note