PT-2026-34372 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-23 · CVE-2026-31467

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 A deadlock can occur in the bio completion path within the process context, such as in dm-verity. This happens when the path calls decompression directly to minimize scheduling latencies, which may subsequently call the vm map ram() function with GFP KERNEL. Under conditions of insufficient memory, vm map ram() can trigger memory swapping I/O, leading to a deadlock in submit bio wait because the bio list is already initialized.

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

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

CVE-2026-31467

ECHO-D828-723B-762B

Affected Products

Linux Kernel

References · 17

• https://security-tracker.debian.org/tracker/CVE-2026-31467 · Vendor Advisory
• https://git.kernel.org/stable/c/da40464064599eefe78749f75cd2bba371044c04 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31467 · Vendor Advisory
• https://git.kernel.org/stable/c/d9d8360cb66e3b599d89d2526e7da8b530ebf2ff · Patch
• https://ubuntu.com/security/CVE-2026-31467 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31467 · Vendor Advisory
• https://git.kernel.org/stable/c/e83e20b82859f0588e9a52a6fa9fea704a2061cf · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31467 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31467 · Security Note
• https://git.kernel.org/stable/c/378949f46e897204384f3f5f91e42e93e3f87568 · Patch
• https://git.kernel.org/stable/c/d6565ea662e17d45a577184b0011bd69de22dc2b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-31467 · Security Note
• https://git.kernel.org/stable/c/5c8ecdcfbfb0b0c6a82a4ebadc1ddea61609b902 · Patch
• https://git.kernel.org/stable/c/c23df30915f83e7257c8625b690a1cece94142a0 · Patch
• https://docs.bell-sw.com/security/cves/CVE-2026-31467 · Note