CVE-2025-40198 - CVE House
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Status published Unknown CVE-2025-40198

ext4: avoid potential buffer over-read in parse_apply_sb_mount_options()

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid potential buffer over-read in parse_apply_sb_mount_options() Unlike other strings in the ext4 superblock, we rely on tune2fs to make sure s_mount_opts is NUL terminated. Harden parse_apply_sb_mount_options() by treating s_mount_opts as a potential __nonstring.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
8b67f04ab9de5d8f3a71aef72bf02c995a506db5, 2.6.36, 0, 5.4.301, 5.10.246, 6.1.158, 6.6.114, 6.12.54, 6.17.4, 6.18

Timeline

Official Publish: November 12th, 2025
Last Modified: May 11th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.