{"api_version":"1","generated_at":"2026-07-26T00:27:28+00:00","cve":"CVE-2026-64520","urls":{"html":"https://cve.report/CVE-2026-64520","api":"https://cve.report/api/cve/CVE-2026-64520.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64520","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64520"},"summary":{"title":"firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:38","updated_at":"2026-07-25 10:17:38"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95","name":"https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f","name":"https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08","name":"https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64520","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64520","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ba85c644ac8dc37d9b01a3332c2f142cb4d46954 f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ba85c644ac8dc37d9b01a3332c2f142cb4d46954 79d95c02ae0a95e6e80e8e92b7ca74ecee02854f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected ba85c644ac8dc37d9b01a3332c2f142cb4d46954 3974ea1938406f9bfa7c1f48d4e43533f447bb08 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.34 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64520","cve":"CVE-2026-64520","epss":"0.002060000","percentile":"0.108610000","score_date":"2026-07-25","updated_at":"2026-07-26 00:12:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/firmware/arm_ffa/driver.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95","status":"affected","version":"ba85c644ac8dc37d9b01a3332c2f142cb4d46954","versionType":"git"},{"lessThan":"79d95c02ae0a95e6e80e8e92b7ca74ecee02854f","status":"affected","version":"ba85c644ac8dc37d9b01a3332c2f142cb4d46954","versionType":"git"},{"lessThan":"3974ea1938406f9bfa7c1f48d4e43533f447bb08","status":"affected","version":"ba85c644ac8dc37d9b01a3332c2f142cb4d46954","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/firmware/arm_ffa/driver.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.34","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.34","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)"}],"providerMetadata":{"dateUpdated":"2026-07-25T09:14:46.005Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"},{"url":"https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"},{"url":"https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08"}],"title":"firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64520","datePublished":"2026-07-25T09:14:46.005Z","dateReserved":"2026-07-19T15:36:31.794Z","dateUpdated":"2026-07-25T09:14:46.005Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-25 10:17:38","lastModifiedDate":"2026-07-25 10:17:38","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64520","Ordinal":"1","Title":"firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies","CVE":"CVE-2026-64520","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64520","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies\n\nThe register-based PARTITION_INFO_GET path trusted the firmware-provided\nindices when copying partition descriptors into the caller buffer.\nReject inconsistent counts or index progressions so the copy loop cannot\nwrite past the allocated array.\n\n(fixed cur_idx when exactly one descriptor in the first fragment)","Type":"Description","Title":"firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies"}]}}}