CVE-2026-89779
kernel: fs/ntfs3: validate ef->size covers the record's name and value
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 16, 2026
Updated · October 17, 2026
Description
A flaw was found in the Linux kernel's ntfs3 filesystem driver. This vulnerability allows a local attacker to craft an Extended Attribute (EA) record with an undersized ef->size value. When processed, this can lead to an out-of-bounds read, resulting in the disclosure of sensitive heap memory to userspace. This information disclosure could potentially expose confidential system data.
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-125 · Out-of-bounds Read