PT-2026-38950 · Linux · Linux Kernel

Published 2026-05-08 · Updated 2026-05-15 · CVE-2026-43308

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 An issue exists in the Btrfs filesystem where the run one delayed ref() function triggers a BUG() panic when encountering an unexpected delayed reference type. This can lead to a system crash (Denial of Service).

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

Related Identifiers

CVE-2026-43308

Affected Products

Linux Kernel

References · 15

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-43308 · Vendor Advisory
• https://git.kernel.org/stable/c/5549743e11c06da23cfa7712a994b9f1e69064c6 · Patch
• https://ubuntu.com/security/CVE-2026-43308 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-43308 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-43308 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-43308 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-43308 · Security Note
• https://git.kernel.org/stable/c/c7d1d4ff56744074e005771aff193b927392d51f · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-43308 · Vendor Advisory
• https://twitter.com/CVEnew/status/2053174632677539979 · Twitter Post
• https://twitter.com/windowsforum/status/2053772994950869359 · Twitter Post
• https://docs.bell-sw.com/security/cves/CVE-2026-43308 · Note
• https://t.me/cveNotify/163668 · Telegram Post
• https://twitter.com/hetmehtaa/status/2055151398283837677 · Twitter Post
• https://git.kernel.org/linus/c7d1d4ff56744074e005771aff193b927392d51f · Note