VulnerabilityModified
CVE-2026-31447
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.
HIGH 7.8EPSS 0.14%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.14% probability · 4th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/3822743dc20386d9897e999dbb990befa3a5b3f8Patch
- https://git.kernel.org/stable/c/3a926957cc95899ef88529710836edadc03c71a1Patch
- https://git.kernel.org/stable/c/5ad6d994255e27a3254079dfb50ca861fc31f2d0Patch
- https://git.kernel.org/stable/c/7b58c110b4e1f028eb38eec9ed3555e9be81c8b0Patch
- https://git.kernel.org/stable/c/7d5b04290156c3fc316eecc86a4f9d201ab7d44aPatch
- https://git.kernel.org/stable/c/ad1f6d608f33f59d21a3d025615d6786a6443998Patch
- https://git.kernel.org/stable/c/b77de3fceafbb39f30e4ff5dc986f863d5456417Patch
- https://git.kernel.org/stable/c/d787d3ae96648dc14a3b7ca8fde817177e82c1c7Patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.