CVE-2026-31447

HIGH EPSS 3.3%
Published Apr 22, 20262mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
3.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥3.2  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.131
linuxlinux_kernel*≥6.7  –  <6.12.80
linuxlinux_kernel*≥6.13  –  <6.18.21
linuxlinux_kernel*≥6.19  –  <6.19.11
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7
    Patch