CVE-2026-31447

HIGH 7.8

ext4: reject mount if bigalloc with s_first_data_block != 0

CVSS Score

7.8

EPSS Score

0.0%

EPSS Percentile

0th

In the Linux kernel, the following vulnerability has been resolved: ext4: reject mount if bigalloc with s_first_data_block != 0 bigalloc with s_first_data_block != 0 is not supported, reject mounting it.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Apr 22, 2026
Last Updated	May 11, 2026

Stay Ahead of the Next One

Get instant alerts for linux linux

Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Linux / Linux

281b59959707dfae03ce038cdf231bf4904e170c < 5ad6d994255e27a3254079dfb50ca861fc31f2d0 281b59959707dfae03ce038cdf231bf4904e170c < 3a926957cc95899ef88529710836edadc03c71a1 281b59959707dfae03ce038cdf231bf4904e170c < 7b58c110b4e1f028eb38eec9ed3555e9be81c8b0 281b59959707dfae03ce038cdf231bf4904e170c < b77de3fceafbb39f30e4ff5dc986f863d5456417 281b59959707dfae03ce038cdf231bf4904e170c < d787d3ae96648dc14a3b7ca8fde817177e82c1c7 281b59959707dfae03ce038cdf231bf4904e170c < ad1f6d608f33f59d21a3d025615d6786a6443998 281b59959707dfae03ce038cdf231bf4904e170c < 7d5b04290156c3fc316eecc86a4f9d201ab7d44a 281b59959707dfae03ce038cdf231bf4904e170c < 3822743dc20386d9897e999dbb990befa3a5b3f8

Linux / Linux

3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗