CVE-2023-52976

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Source
https://cve.org/CVERecord?id=CVE-2023-52976
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52976.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-52976
Downstream
Related
Published
2025-03-27T16:43:16.596Z
Modified
2026-03-12T03:27:52.242713Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
efi: fix potential NULL deref in efi_mem_reserve_persistent
Details

In the Linux kernel, the following vulnerability has been resolved:

efi: fix potential NULL deref in efimemreserve_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]

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52976.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
18df7577adae6c6c778bf774b3aebcacbc1fb439
Fixed
d92a25627bcdf264183670da73c9a60c0bac327e
Fixed
87d4ff18738fd71e7e3c10827c80257da6283697
Fixed
d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c
Fixed
a2e6a9ff89f13666a1c3ff7195612ab949ea9afc
Fixed
966d47e1f27c45507c5df82b2a2157e5a4fd3909
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
b5961ecad7121fec138ebee7d9eba4863f9dc6e7

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-52976.json"