CVE-2026-31447
7.8
HIGH
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2026-31447
To remediate CVE-2026-31447, upgrade the affected package to a fixed version below.
- Debian/linux—no fix listed
- Debian/linux-6.1—upgrade to 6.1.170-1~deb11u1 or later
Is CVE-2026-31447 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- from 0, < 6.1.170-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |