PT-2026-34915 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-03 · CVE-2026-31563

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/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 net: macb component where the napi consume skb() function is called within an IRQ disabled context, which is not its intended use. This occurs during the freeing of TX SKBs, potentially leading to system warnings or instability.

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

Related Identifiers

CVE-2026-31563

ECHO-D9B5-BBAA-DF19

Affected Products

Linux Kernel

References · 16

• https://git.kernel.org/stable/c/984350b37372f79f71d4f0a5264c640e40daf9ce · Patch
• https://ubuntu.com/security/CVE-2026-31563 · Vendor Advisory
• https://git.kernel.org/stable/c/78c8b090a3d5c1689dc989861b0163180db2b3f8 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31563 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31563 · Vendor Advisory
• https://git.kernel.org/stable/c/ca4d05afb4683d685bb2c6fccae4386c478f524a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31563 · Security Note
• https://git.kernel.org/stable/c/92e7081f0c79d9073087e54bab745bb184192c2e · Patch
• https://cve.org/CVERecord?id=CVE-2026-31563 · Security Note
• https://git.kernel.org/stable/c/647b8a2fe474474704110db6bd07f7a139e621eb · Patch
• https://git.kernel.org/stable/c/f4bc91398b579730284328322365afa77a9d568f · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31563 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31563 · Vendor Advisory
• https://twitter.com/CVEnew/status/2047798622620897536 · Twitter Post
• https://docs.bell-sw.com/security/cves/CVE-2026-31563 · Note