{"id":"CVE-2023-53266","state":"PUBLISHED","title":"arm64: acpi: Fix possible memory leak of ffh_ctxt","description":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: acpi: Fix possible memory leak of ffh_ctxt\n\nAllocated 'ffh_ctxt' memory leak is possible if the SMCCC version\nand conduit checks fail and -EOPNOTSUPP is returned without freeing the\nallocated memory.\n\nFix the same by moving the allocation after the SMCCC version and\nconduit checks.","publishedAt":"2025-09-16T08:06:56.578Z","updatedAt":"2026-05-11T19:41:35.805Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","source":"CISA-ADP"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1d280ce099db396e092cac1aa9bf2ea8beee6d76","status":"affected","lessThan":"7521da2eb42d65f89f511b7912d3757cf3d9168a","versionType":"git"},{"version":"1d280ce099db396e092cac1aa9bf2ea8beee6d76","status":"affected","lessThan":"1b561d3949f8478c5403c9752b5533211a757226","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/acpi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.3","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/acpi.c"]}],"references":["https://git.kernel.org/stable/c/7521da2eb42d65f89f511b7912d3757cf3d9168a","https://git.kernel.org/stable/c/1b561d3949f8478c5403c9752b5533211a757226"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/53xxx/CVE-2023-53266.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-53266","state":"PUBLISHED","datePublished":"2025-09-16T08:06:56.578Z","dateUpdated":"2026-05-11T19:41:35.805Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-09-16T08:05:12.515Z"},"containers":{"cna":{"title":"arm64: acpi: Fix possible memory leak of ffh_ctxt","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\narm64: acpi: Fix possible memory leak of ffh_ctxt\n\nAllocated 'ffh_ctxt' memory leak is possible if the SMCCC version\nand conduit checks fail and -EOPNOTSUPP is returned without freeing the\nallocated memory.\n\nFix the same by moving the allocation after the SMCCC version and\nconduit checks."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1d280ce099db396e092cac1aa9bf2ea8beee6d76","status":"affected","lessThan":"7521da2eb42d65f89f511b7912d3757cf3d9168a","versionType":"git"},{"version":"1d280ce099db396e092cac1aa9bf2ea8beee6d76","status":"affected","lessThan":"1b561d3949f8478c5403c9752b5533211a757226","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/acpi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.2.3","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/arm64/kernel/acpi.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7521da2eb42d65f89f511b7912d3757cf3d9168a"},{"url":"https://git.kernel.org/stable/c/1b561d3949f8478c5403c9752b5533211a757226"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:41:35.805Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","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":{"id":"CVE-2023-53266","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-01-14T18:04:15.187266Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","lang":"en","type":"CWE","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-14T18:12:52.738Z"}}]}}}