PT-2026-34932 · Linux · Linux Kernel

Published 2026-04-24 · Updated 2026-05-06 · CVE-2026-31580

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description A use-after-free issue exists in the bcache component. The problem occurs when a device is stopped while writing to the superblock, leading to a situation where the address of cached dev.sb bio is freed but subsequently accessed during the endio process, which can result in a system crash.

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

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-31580

ECHO-072C-2D8C-D831

OPENSUSE-SU-2026:10703-1

Affected Products

Linux Kernel

References · 77

• https://nvd.nist.gov/vuln/detail/CVE-2026-31580 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31580 · Vendor Advisory
• https://git.kernel.org/stable/c/4f71c8ba2dc009042493021d94a9718fbe2ebf27 · Patch
• https://cve.org/CVERecord?id=CVE-2026-31580 · Security Note
• https://git.kernel.org/stable/c/383f7fec0de8cee1cf7ae1f9d9f14044a61f10f9 · Patch
• https://git.kernel.org/stable/c/fec114a98b8735ee89c75216c45a78e28be0f128 · Patch
• https://git.kernel.org/stable/c/47fa09fe7f3e09df28a51cb2cbd8f5d2f7f6edc1 · Patch
• https://ubuntu.com/security/CVE-2026-31580 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:10703-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2d6965581e164fa2ba3f7652ddae5535f6336576 · Patch
• https://security-tracker.debian.org/tracker/CVE-2026-31580 · Vendor Advisory
• https://git.kernel.org/stable/c/add4982510f3b7c318a2dd7438bdc9c63171e753 · Patch
• https://osv.dev/vulnerability/BELL-CVE-2026-31580 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31580 · Vendor Advisory
• https://suse.com/security/cve/CVE-2026-31589 · Note