PT-2026-34905 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-04-29 · CVE-2026-31553

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

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

Description An issue exists in the KVM arm64 component within the kvm at swap desc() function. The software incorrectly calculates the virtual addresses of S1/S2 descriptors by using (u64 user *)hva + offset, which results in an incorrect address calculation when the offset is not zero.

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

Related Identifiers

CVE-2026-31553

Affected Products

Linux Kernel

References · 10

• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31553 · Vendor Advisory
• https://git.kernel.org/stable/c/4307e05e568782fc92eff651b09ee5dee88a058d · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31553 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-31553 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31553 · Security Note
• https://ubuntu.com/security/CVE-2026-31553 · Vendor Advisory
• https://git.kernel.org/stable/c/0496acc42fb51eee040b5170cec05cec41385540 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31553 · Security Note
• https://twitter.com/CVEnew/status/2047798632355934414 · Twitter Post
• https://git.kernel.org/linus/0496acc42fb51eee040b5170cec05cec41385540 · Note