{"id":"CVE-2023-52893","state":"PUBLISHED","title":"gsmi: fix null-deref in gsmi_get_variable","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ngsmi: fix null-deref in gsmi_get_variable\n\nWe can get EFI variables without fetching the attribute, so we must\nallow for that in gsmi.\n\ncommit 859748255b43 (\"efi: pstore: Omit efivars caching EFI varstore\naccess layer\") added a new get_variable call with attr=NULL, which\ntriggers panic in gsmi.","publishedAt":"2024-08-21T06:10:33.043Z","updatedAt":"2026-05-11T19:35:00.760Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ee5763ef829bd923033510de6d1df7c73f085e4b","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"32313c11bdc8a02c577abaf865be3664ab30410a","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ffef77794fb5f1245c3249b86342bad2299accb5","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"eb0421d90f916dffe96b4c049ddf01c0c50620d2","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"6646d769fdb0ce4318ef9afd127f8526d1ca8393","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"a769b05eeed7accc4019a1ed9799dd72067f1ce8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/google/gsmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"4.14.304","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.271","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.230","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.165","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.90","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.8","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/google/gsmi.c"]}],"references":["https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b","https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a","https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5","https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd","https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2","https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393","https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52893.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52893","state":"PUBLISHED","datePublished":"2024-08-21T06:10:33.043Z","dateUpdated":"2026-05-11T19:35:00.760Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-08-21T06:07:11.013Z"},"containers":{"cna":{"title":"gsmi: 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gsmi."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ee5763ef829bd923033510de6d1df7c73f085e4b","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"32313c11bdc8a02c577abaf865be3664ab30410a","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ffef77794fb5f1245c3249b86342bad2299accb5","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"eb0421d90f916dffe96b4c049ddf01c0c50620d2","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"6646d769fdb0ce4318ef9afd127f8526d1ca8393","versionType":"git"},{"version":"74c5b31c6618f01079212332b2e5f6c42f2d6307","status":"affected","lessThan":"a769b05eeed7accc4019a1ed9799dd72067f1ce8","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/google/gsmi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.0","versionType":"semver"},{"version":"4.14.304","status":"unaffected","lessThanOrEqual":"4.14.*","versionType":"semver"},{"version":"4.19.271","status":"unaffected","lessThanOrEqual":"4.19.*","versionType":"semver"},{"version":"5.4.230","status":"unaffected","lessThanOrEqual":"5.4.*","versionType":"semver"},{"version":"5.10.165","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.90","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.8","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/firmware/google/gsmi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b"},{"url":"https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a"},{"url":"https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5"},{"url":"https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd"},{"url":"https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2"},{"url":"https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393"},{"url":"https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:35:00.760Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"4.14.304"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"4.19.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.4.230"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.10.165"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"5.15.90"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.1.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA 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