{"cve":"CVE-2026-98698","nvd":{"published":"2026-10-18T16:17:23.280","modified":"2026-10-21T13:21:37.963","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: handle empty FILS association request payload\n\nfils_encrypt_assoc_req() accepts a (Re)Association Request frame whose\nlast element is the FILS Session element.  crypt_len is then zero and\naes_siv_encrypt() is called with an empty plaintext.\n\nkmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the\nunconditional sg_init_one() puts an invalid page into the scatterlist.\nWith CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf();\nwithout the debug check the bogus page is handed to the crypto backend.\n\nAES-SIV is defined for empty plaintext and the S2V result is then the\ncomplete output, so handle this case before the CTR step, which has\nnothing to encrypt.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2","https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef","https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4","https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67"],"products":[],"source":"nvd","synced_at":"2026-10-22T16:41:11.231219466+00:00"},"epss":{"cve":"CVE-2026-98698","score":0.00168,"percentile":0.05985,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}