PT-2026-34352 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-05-22 · CVE-2026-31447

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/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 ext4 file system where the kernel fails to reject mounting when bigalloc is used in conjunction with s first data block not equal to 0, a configuration that is not supported.

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

Related Identifiers

CVE-2026-31447

ECHO-258F-E1D2-EEA5

OESA-2026-2416

OESA-2026-2417

OESA-2026-2418

OESA-2026-2419

Affected Products

Linux Kernel

References · 170

• https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-40281 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23374 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-37967 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-37766 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40062 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39756 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39955 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-68740 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40078 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-22994 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-40136 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-39980 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-43488 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-23317 · Security Note