Medium severity5.5NVD Advisory· Published Mar 27, 2025· Updated Jun 17, 2026
CVE-2023-52976
CVE-2023-52976
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]
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
93- osv-coords84 versionspkg:linux/kernelpkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-livepatch-SLE15-SP4_Update_39&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP4pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP5_Update_25&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/kernel-default-base&distro=SUSE%20Manager%20Server%204.3
>= 5.2.0, < 5.4.232+ 83 more
- (no CPE)range: >= 5.2.0, < 5.4.232
- (no CPE)range: < 5.14.21-150400.15.115.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.13.91.1
- (no CPE)range: < 5.14.21-150500.13.91.1
- (no CPE)range: < 5.14.21-150400.15.115.1
- (no CPE)range: < 5.14.21-150400.15.115.1
- (no CPE)range: < 5.14.21-150400.15.115.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 1-150400.9.3.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1.150500.6.47.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 1-150500.11.3.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1.150500.6.47.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1.150500.6.47.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1.150500.6.47.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150500.55.100.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
- (no CPE)range: < 5.14.21-150500.55.100.1.150500.6.47.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1
- (no CPE)range: < 5.14.21-150400.24.161.1.150400.24.80.1
(expand)+ 8 more
- (no CPE)
- (no CPE)range: 5.2
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.1.16,<5.4.232
- cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.2:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.2:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:6.2:rc6:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
5- git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697nvdPatch
- git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909nvdPatch
- git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afcnvdPatch
- git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23cnvdPatch
- git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327envdPatch
News mentions
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