CVE-2026-64296

A flaw was found in the Linux kernel's exFAT filesystem driver. A local attacker could create a specially crafted directory with malformed name fragments. When the kernel processes this directory, an out-of-bounds read and write can occur, potentially leading to a denial of service or system instability. This vulnerability arises from incorrect boundary checks during the processing of directory entries.

This issue is triggered by a specially crafted disk image containing on-disk metadata inconsistencies. Exploitation requires that an attacker convince a user to download and use a malicious image from an untrusted source, a scenario with limited practical impact. Red Hat rates this as Low severity.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.