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CVE-2026-31447 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-31447

CVE-2026-31447

HIGH7.8

ext4: reject mount if bigalloc with s_first_data_block != 0

Published Apr 22, 2026

Modified 5 days ago

Details

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

WEB

https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8

WEB

https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1

WEB

https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0

WEB

https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0

WEB

https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a

WEB

https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998

WEB

https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417

WEB

https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-31447

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

RequiredUI:R

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7.8/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Ecosystems

Timeline

PublishedApr 22, 2026

ModifiedMay 11, 2026