{"id":"CVE-2026-64520","summary":"firmware: arm_ffa: Bound PARTITION_INFO_GET_REGS copies","details":"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)","modified":"2026-07-28T03:46:34.693227253Z","published":"2026-07-25T09:14:46.005Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64520.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3974ea1938406f9bfa7c1f48d4e43533f447bb08"},{"type":"WEB","url":"https://git.kernel.org/stable/c/79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64520.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64520"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"ba85c644ac8dc37d9b01a3332c2f142cb4d46954"},{"fixed":"f39bc7ebe75e2186b417a024a7f7e2fd4cc7eb95"},{"fixed":"79d95c02ae0a95e6e80e8e92b7ca74ecee02854f"},{"fixed":"3974ea1938406f9bfa7c1f48d4e43533f447bb08"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64520.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.12.0"},{"fixed":"6.18.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64520.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}