CVE-2026-31447
HIGHext4: reject mount if bigalloc with s_first_data_block != 0
Title source: cnaDescription
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.
References (10)
Core 10
Core References
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
Vendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Scores
CVSS v3
7.8
EPSS
0.0014
EPSS Percentile
4.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Details
Status
published
Products (35)
linux/Kernel
3.2.0 - 5.10.253linux
linux/Kernel
5.11.0 - 5.15.203linux
linux/Kernel
5.16.0 - 6.1.168linux
linux/Kernel
6.13.0 - 6.18.21linux
linux/Kernel
6.19.0 - 6.19.11linux
linux/Kernel
6.2.0 - 6.6.131linux
linux/Kernel
6.7.0 - 6.12.80linux
Linux/Linux
< 3.2
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 3822743dc20386d9897e999dbb990befa3a5b3f8
Linux/Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 - 3a926957cc95899ef88529710836edadc03c71a1
... and 25 more
Published
Apr 22, 2026
Tracked Since
Apr 22, 2026