CVE-2022-1011
kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 7, 2022
Updated · October 6, 2026
Description
A use-after-free flaw was found in the Linux kernel’s FUSE filesystem in the way a user triggers write(). This flaw allows a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation.
Statement
For the Red Hat Enterprise Linux the issue actual if fuse or fuse3 package is installed on the system and only privileged user can install it.
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
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free