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Vulnerability DatabaseCVE-2023-52994
CVE-2023-52994:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2023-52994 is a vulnerability in the Linux kernel related to ACPI suspend functionality with Xen PV guests. The vulnerability was discovered and disclosed on March 27, 2025. The issue affects the Linux kernel's ACPI implementation when running as a Xen PV guest (NVD).
Technical details
The vulnerability stems from a missed code path accessing realmodeheader in commit f1e525009493 ("x86/boot: Skip realmode init code when running as Xen PV guest"), which leads to dereferencing NULL when suspending the system under Xen. This occurs during the system suspend process when the ACPI subsystem attempts to get the wakeup address (NVD).
Impact
When exploited, this vulnerability causes a kernel NULL pointer dereference during system suspend operations on Xen PV guests, potentially leading to system crashes and denial of service conditions (NVD).
Mitigation and workarounds
The fix involves adding an optional ACPI callback that allows skipping the wakeup address setting, as this is handled by the hypervisor in the Xen PV case (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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