SB2026072076 - Missing Release of Resource after Effective Lifetime in Linux kernel erofs

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-64146)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a resource leak in erofs_init_inode_xattrs() in the EROFS xattr handling code when parsing crafted filesystem metadata. A local user can trigger error paths that leak a folio reference to cause a denial of service.

The issue occurs on certain error paths after a metabuf has been acquired during inode xattr initialization.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/492c73b21fefa36f3869cb2b188ffb7fe37b3a9b
• https://git.kernel.org/stable/c/79b09c54c6563df9846ca3094bcfd72082c3e1d7