CVE-2023-52976
efi: fix potential NULL deref in efi_mem_reserve_persistent
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 27, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
18df7577adae6c6c778bf774b3aebcacbc1fb439 < d92a25627bcdf264183670da73c9a60c0bac327e 18df7577adae6c6c778bf774b3aebcacbc1fb439 < 87d4ff18738fd71e7e3c10827c80257da6283697 18df7577adae6c6c778bf774b3aebcacbc1fb439 < d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c 18df7577adae6c6c778bf774b3aebcacbc1fb439 < a2e6a9ff89f13666a1c3ff7195612ab949ea9afc 18df7577adae6c6c778bf774b3aebcacbc1fb439 < 966d47e1f27c45507c5df82b2a2157e5a4fd3909 b5961ecad7121fec138ebee7d9eba4863f9dc6e7
Linux / Linux
5.2
References
git.kernel.org: https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e git.kernel.org: https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697 git.kernel.org: https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c git.kernel.org: https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc git.kernel.org: https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909