PT-2026-2552 · Linux+2 · Linux Kernel+2
CVE-2025-68820
·
Published
2025-10-22
·
Updated
2026-06-16
CVSS v2.0
4.6
Medium
| Vector | AV:L/AC:L/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the Linux kernel's ext4 implementation related to extended attribute handling. Specifically, a null pointer dereference can occur within the
ext4 raw inode() function if ext4 get inode loc() fails and returns an error, leaving a block handle (iloc.bh) as NULL. Subsequently, ext4 xattr inode dec ref all() lacks error checking, leading to the dereference when called before ext4 raw inode(). This issue was discovered by the Linux Verification Center using SVACE.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Unchecked Return Value
NULL Pointer Dereference
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu