{"id":"CVE-2025-40266","summary":"KVM: arm64: Check the untrusted offset in FF-A memory share","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Check the untrusted offset in FF-A memory share\n\nVerify the offset to prevent OOB access in the hypervisor\nFF-A buffer in case an untrusted large enough value\n[U32_MAX - sizeof(struct ffa_composite_mem_region) + 1, U32_MAX]\nis set from the host kernel.","aliases":["A-439862698","ASB-A-439862698"],"modified":"2026-04-16T04:32:52.521525771Z","published":"2025-12-04T16:08:25.392Z","related":["SUSE-SU-2026:20207-1","SUSE-SU-2026:20220-1","SUSE-SU-2026:20228-1","openSUSE-SU-2026:20145-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40266.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/103e17aac09cdd358133f9e00998b75d6c1f1518"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bc1909ef38788f2ee3d8011d70bf029948433051"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f9f1aed6c8a3427900da3121e1868124854569c3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40266.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40266"},{"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":"6211753fdfd05af9e08f54c8d0ba3ee516034878"},{"fixed":"fc3139d9f4c1fe1c7d5f25f99676bd8e9c6a1041"},{"fixed":"bc1909ef38788f2ee3d8011d70bf029948433051"},{"fixed":"f9f1aed6c8a3427900da3121e1868124854569c3"},{"fixed":"103e17aac09cdd358133f9e00998b75d6c1f1518"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40266.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.11.0"},{"fixed":"6.6.118"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.60"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.17.10"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40266.json"}}],"schema_version":"1.7.5"}