CVE-2022-28893
kernel: use after free in SUNRPC subsystem
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 11, 2022
Updated · June 28, 2026
Description
A use-after-free flaw was found in the Linux kernel’s net/sunrpc/xprt.c function in the Remote Procedure Call (SunRPC) protocol. This flaw allows a local attacker to crash the system, leading to a kernel information leak issue.
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
This flaw can be mitigated by preventing the affected SUNRPC driver (sunrpc) kernel module from loading during the boot time, ensuring the module is added to the blacklist file.
Refer:
How do I blacklist a kernel module to prevent it from loading automatically?
https://access.redhat.com/solutions/41278
CVSS / CWE
CVSS 3.1 · 6.6CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
CWE-416 · Use After Free