HarborGuard / CVE
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HIGHCVE-2026-31447Published Modified CNA Linux

CVE-2026-31447: ext4: reject mount if bigalloc with s_first_data_block != 0

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.

Metrics

CVSS v3.1
7.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

03822743dc20386d9897e999dbb990befa3a5b3f83a926957cc95899ef88529710836edadc03c71a15.10.2535.15.2035ad6d994255e27a3254079dfb50ca861fc31f2d06.1.1686.6.1316.12.806.18.216.19.117.07b58c110b4e1f028eb38eec9ed3555e9be81c8b07d5b04290156c3fc316eecc86a4f9d201ab7d44aad1f6d608f33f59d21a3d025615d6786a6443998b77de3fceafbb39f30e4ff5dc986f863d5456417d787d3ae96648dc14a3b7ca8fde817177e82c1c7
Affected packages
  • Linux / Linux
    < 5ad6d994255e27a3254079dfb50ca861fc31f2d0 (from 281b59959707dfae03ce038cdf231bf4904e170c) · < 3a926957cc95899ef88529710836edadc03c71a1 (from 281b59959707dfae03ce038cdf231bf4904e170c) · < 7b58c110b4e1f028eb38eec9ed3555e9be81c8b0 (from 281b59959707dfae03ce038cdf231bf4904e170c) · < b77de3fceafbb39f30e4ff5dc986f863d5456417 (from 281b59959707dfae03ce038cdf231bf4904e170c) · < d787d3ae96648dc14a3b7ca8fde817177e82c1c7 (from 281b59959707dfae03ce038cdf231bf4904e170c) · < ad1f6d608f33f59d21a3d025615d6786a6443998 (from 281b59959707dfae03ce038cdf231bf4904e170c)
  • Linux / Linux
    3.2
    Fixed in 0, 5.10.253, 5.15.203, 6.1.168, 6.6.131, 6.12.80, 6.18.21, 6.19.11, 7.0
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References