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Vulnerability details: VCID-pytf-9ehq-ykc5
Vulnerability ID VCID-pytf-9ehq-ykc5
Aliases CVE-2026-31447
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-1288 Improper Validation of Consistency within Input
System Score Found at
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31447.json
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2026-31447
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2026-31447
epss 0.00013 https://api.first.org/data/v1/epss?cve=CVE-2026-31447
epss 0.00024 https://api.first.org/data/v1/epss?cve=CVE-2026-31447
epss 0.00024 https://api.first.org/data/v1/epss?cve=CVE-2026-31447
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31447.json
https://api.first.org/data/v1/epss?cve=CVE-2026-31447
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-31447
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2460661 https://bugzilla.redhat.com/show_bug.cgi?id=2460661
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-31447.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.02224
EPSS Score 0.00013
Published At April 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-23T05:40:56.644669+00:00 Debian Importer Import https://security-tracker.debian.org/tracker/data/json 38.4.0