{"id":"CVE-2026-98698","published":"2026-10-18T16:17:23.280","lastModified":"2026-10-19T10:19:34.137","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2","tags":[]},{"url":"https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef","tags":[]},{"url":"https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4","tags":[]},{"url":"https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}