High
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.
Announced Source revision 1
Original source ↗CVE-2026-31447
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-31447
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "5ad6d994255e27a3254079dfb50ca861fc31f2d0",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "3a926957cc95899ef88529710836edadc03c71a1",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "7b58c110b4e1f028eb38eec9ed3555e9be81c8b0",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "b77de3fceafbb39f30e4ff5dc986f863d5456417",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "d787d3ae96648dc14a3b7ca8fde817177e82c1c7",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "ad1f6d608f33f59d21a3d025615d6786a6443998",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "7d5b04290156c3fc316eecc86a4f9d201ab7d44a",
"versionType": "git"
},
{
"status": "affected",
"version": "281b59959707dfae03ce038cdf231bf4904e170c",
"lessThan": "3822743dc20386d9897e999dbb990befa3a5b3f8",
"versionType": "git"
}
],
"programFiles": [
"fs/ext4/super.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.253",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.203",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.131",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.80",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.21",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.11",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/ext4/super.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-31447
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39878 · Revision 1
- Added to Heist Feed
- Publisher date