{"id":"CVE-2026-98611","published":"2026-10-18T16:17:13.927","lastModified":"2026-10-19T10:19:23.283","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Check params size before reading reserved fields\n\nbpf_crypto_ctx_create() is a kfunc whose second argument is declared\nwith the __sz annotation, so the verifier only guarantees that\nparams__sz bytes of params are valid.  The function nevertheless reads\nparams->reserved[0] and params->reserved[1] (offsets 14 and 15) before\ncomparing params__sz against the size of struct bpf_crypto_params, so a\nBPF program can pass a shorter buffer and have the kernel read past the\nregion that was validated for it.\n\nMove the size check in front of the reserved field reads.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/86a0e945fb645ea90233fde239cd2de79f01974c","tags":[]},{"url":"https://git.kernel.org/stable/c/a11212910cf09b2fe8db9afa41ef60c4f81879c5","tags":[]},{"url":"https://git.kernel.org/stable/c/cd12d3e08620257fbcaa262785d7f4b9473afc7a","tags":[]},{"url":"https://git.kernel.org/stable/c/e03253f5d65ebcd2a6d479f140c3bd9c7e4fb84a","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}