CVE Database›CVE-2024-50102

CVE-2024-50102

kernel: x86: fix user address masking non-canonical speculation issue

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · November 5, 2024

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's handling of user address masking on x86 architectures. This vulnerability, similar to "Meltdown Lite," allows for speculative execution (a CPU optimization technique) to be exploited due to incorrect handling of non-canonical memory accesses in kernel space. A local attacker with low privileges could leverage this issue to potentially leak sensitive data from kernel memory. This affects AMD Zen 5 and newer processors, where the speculation window remains open.

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 do not 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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CWE-203 · Observable Discrepancy