PT-2026-34921 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-04-28 · CVE-2026-31569

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

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

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

Description An out-of-bounds access occurs in the kvm arch::phyid map::phys map[] array within the LoongArch KVM implementation. This happens because the eiointc update sw coremap() function may encounter an empty EIOINTC coremap, resulting in a cpuid of -1 instead of the required 0.

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

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-31569

Affected Products

Linux Kernel

References · 11

• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31569 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31569 · Security Note
• https://git.kernel.org/stable/c/126053d0a685bf1f2e98db8966386f38b2336338 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31569 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-31569 · Vendor Advisory
• https://git.kernel.org/stable/c/b97bd69eb0f67b5f961b304d28e9ba45e202d841 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31569 · Vendor Advisory
• https://git.kernel.org/stable/c/2a0cbcd28ecf6e0b88fa498bebb94bd1be61a7c3 · Patch
• https://ubuntu.com/security/CVE-2026-31569 · Vendor Advisory
• https://git.kernel.org/linus/b97bd69eb0f67b5f961b304d28e9ba45e202d841 · Note
• https://twitter.com/CVEnew/status/2047798616946094397 · Twitter Post