CVE-2023-52976 - CVE House
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Status published Unknown CVE-2023-52976

efi: fix potential NULL deref in efi_mem_reserve_persistent

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: efi: fix potential NULL deref in efi_mem_reserve_persistent When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL. This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed. Found by Linux Verification Center (linuxtesting.org) with SVACE. [ardb: return -ENOMEM instead of breaking out of the loop]

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

Linux
Vulnerable Versions:
18df7577adae6c6c778bf774b3aebcacbc1fb439, b5961ecad7121fec138ebee7d9eba4863f9dc6e7, 5.1.16, 5.2, 0, 5.4.232, 5.10.168, 5.15.93, 6.1.11, 6.2

Timeline

Official Publish: March 27th, 2025
Last Modified: May 23rd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.