{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52976","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2025-03-27T16:40:15.738Z","datePublished":"2025-03-27T16:43:16.596Z","dateUpdated":"2026-05-11T19:36:15.312Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T19:36:15.312Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nefi: fix potential NULL deref in efi_mem_reserve_persistent\n\nWhen iterating on a linked list, a result of memremap is dereferenced\nwithout checking it for NULL.\n\nThis patch adds a check that falls back on allocating a new page in\ncase memremap doesn't succeed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[ardb: return -ENOMEM instead of breaking out of the loop]"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/efi/efi.c"],"versions":[{"version":"18df7577adae6c6c778bf774b3aebcacbc1fb439","lessThan":"d92a25627bcdf264183670da73c9a60c0bac327e","status":"affected","versionType":"git"},{"version":"18df7577adae6c6c778bf774b3aebcacbc1fb439","lessThan":"87d4ff18738fd71e7e3c10827c80257da6283697","status":"affected","versionType":"git"},{"version":"18df7577adae6c6c778bf774b3aebcacbc1fb439","lessThan":"d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c","status":"affected","versionType":"git"},{"version":"18df7577adae6c6c778bf774b3aebcacbc1fb439","lessThan":"a2e6a9ff89f13666a1c3ff7195612ab949ea9afc","status":"affected","versionType":"git"},{"version":"18df7577adae6c6c778bf774b3aebcacbc1fb439","lessThan":"966d47e1f27c45507c5df82b2a2157e5a4fd3909","status":"affected","versionType":"git"},{"version":"b5961ecad7121fec138ebee7d9eba4863f9dc6e7","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/efi/efi.c"],"versions":[{"version":"5.2","status":"affected"},{"version":"0","lessThan":"5.2","status":"unaffected","versionType":"semver"},{"version":"5.4.232","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.168","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.93","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.11","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.4.232"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.10.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"5.15.93"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.1.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.2","versionEndExcluding":"6.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1.16"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e"},{"url":"https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697"},{"url":"https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c"},{"url":"https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc"},{"url":"https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909"}],"title":"efi: fix potential NULL deref in efi_mem_reserve_persistent","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-476","lang":"en","description":"CWE-476 NULL Pointer Dereference"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-10-01T17:22:07.723841Z","id":"CVE-2023-52976","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-10-01T17:22:10.974Z"}}]}}