CVE-2026-98698
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: handle empty FILS association request payload fils_enc
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Publicado: 18 oct 2026 · Última mod.: 19 oct 2026
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In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: handle empty FILS association request payload fils_encrypt_assoc_req() accepts a (Re)Association Request frame whose last element is the FILS Session element. crypt_len is then zero and aes_siv_encrypt() is called with an empty plaintext. kmemdup() returns ZERO_SIZE_PTR for a zero-length allocation, so the unconditional sg_init_one() puts an invalid page into the scatterlist. With CONFIG_DEBUG_SG this triggers a kernel BUG in sg_set_buf(); without the debug check the bogus page is handed to the crypto backend. AES-SIV is defined for empty plaintext and the S2V result is then the complete output, so handle this case before the CTR step, which has nothing to encrypt.
- git.kernel.orghttps://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2
- git.kernel.orghttps://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef
- git.kernel.orghttps://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4
- git.kernel.orghttps://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67
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