{"id":"CVE-2026-64101","summary":"fwctl: pds: Validate RPC input size before parsing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nfwctl: pds: Validate RPC input size before parsing\n\nThe fwctl core allocates the device-specific RPC input buffer with\nfwctl_rpc.in_len and passes that buffer to the driver callback.\n\npdsfc_fw_rpc() casts the buffer to struct fwctl_rpc_pds and then calls\npdsfc_validate_rpc(), which reads fields from that structure before\nchecking that the input buffer is large enough to contain it. A short\nin_len can make pds_fwctl read beyond the allocation.\n\nReject pds RPC buffers that are smaller than struct fwctl_rpc_pds before\nparsing any pds-specific fields.","modified":"2026-07-21T03:47:50.167931477Z","published":"2026-07-19T15:40:06.185Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64101.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d470d36551058e3f728574308b815a80bca710f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9e3f18883a98420a3b8873c6f894bc57e9b98e41"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e7537735028c3ad4b0bfc02ff8fa2a1a28aa04fe"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64101.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64101"},{"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":"92c66ee829b99a860a90f62ef16df3e42f92edac"},{"fixed":"9e3f18883a98420a3b8873c6f894bc57e9b98e41"},{"fixed":"0d470d36551058e3f728574308b815a80bca710f"},{"fixed":"e7537735028c3ad4b0bfc02ff8fa2a1a28aa04fe"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-64101.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.15.0"},{"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-2026-64101.json"}}],"schema_version":"1.7.5"}