CVE-2026-43073
kernel: x86-64: rename misleadingly named '__copy_user_nocache()' function
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 5, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel. The __copy_user_nocache() function had a misleading name, which led to its incorrect use by certain kernel components (drivers). These drivers performed kernel memory copies without properly considering the function's exception handling mechanisms. This improper usage could potentially lead to system instability or a denial of service (DoS).
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-440 · Expected Behavior Violation