CVE-2026-31447

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Source
https://cve.org/CVERecord?id=CVE-2026-31447
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31447.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-31447
Downstream
Published
2026-04-22T13:53:43.467Z
Modified
2026-05-18T05:59:48.938208669Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
Summary
ext4: reject mount if bigalloc with s_first_data_block != 0
Details

In the Linux kernel, the following vulnerability has been resolved:

ext4: reject mount if bigalloc with sfirstdata_block != 0

bigalloc with sfirstdata_block != 0 is not supported, reject mounting it.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31447.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
281b59959707dfae03ce038cdf231bf4904e170c
Fixed
5ad6d994255e27a3254079dfb50ca861fc31f2d0
Fixed
3a926957cc95899ef88529710836edadc03c71a1
Fixed
7b58c110b4e1f028eb38eec9ed3555e9be81c8b0
Fixed
b77de3fceafbb39f30e4ff5dc986f863d5456417
Fixed
d787d3ae96648dc14a3b7ca8fde817177e82c1c7
Fixed
ad1f6d608f33f59d21a3d025615d6786a6443998
Fixed
7d5b04290156c3fc316eecc86a4f9d201ab7d44a
Fixed
3822743dc20386d9897e999dbb990befa3a5b3f8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31447.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.2.0
Fixed
5.10.253
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.168
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.131
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.80
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.21
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.11

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-31447.json"