CVE-2021-38201
kernel: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 13, 2021
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel that allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations. The highest threat from this vulnerability is to system availability.
Statement
This issue only affects the Linux kernel versions as shipped with Red Hat Enterprise Linux 8.4 GA onwards.
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 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-787 · Out-of-bounds Write