{"id":"CVE-2026-98698","state":"PUBLISHED","title":"wifi: mac80211: handle empty FILS association request payload","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.","publishedAt":"2026-10-18T15:46:23.363Z","updatedAt":"2026-10-30T12:38:50.641Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"de3297c8e521c0b0ddc89ece6fee84e25da9ecf0","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"ce70c87252a14020cb40032efe208efc6e61b1ee","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"d8c5dbbf584a1baaa008988ac64dd4495f7086bd","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"2f5b62f6534d336a62fdb9e88b186dd70b4323ef","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"452f1c9b76f7a122bbc4630b9691bda4809677c4","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"20f939b0c151d1d28e6b62a76b2454fa6fe877f2","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"5bfd4b0b40b79781d900cb2f7da0685070f53c67","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/fils_aead.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/fils_aead.c"]}],"references":["https://git.kernel.org/stable/c/de3297c8e521c0b0ddc89ece6fee84e25da9ecf0","https://git.kernel.org/stable/c/ce70c87252a14020cb40032efe208efc6e61b1ee","https://git.kernel.org/stable/c/d8c5dbbf584a1baaa008988ac64dd4495f7086bd","https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef","https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4","https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2","https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67"],"weaknesses":[],"ingestedAt":"2026-10-30T12:58:04.520Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98698.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98698","state":"PUBLISHED","datePublished":"2026-10-18T15:46:23.363Z","dateUpdated":"2026-10-30T12:38:50.641Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.365Z"},"containers":{"cna":{"title":"wifi: mac80211: handle empty FILS association request payload","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"de3297c8e521c0b0ddc89ece6fee84e25da9ecf0","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"ce70c87252a14020cb40032efe208efc6e61b1ee","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"d8c5dbbf584a1baaa008988ac64dd4495f7086bd","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"2f5b62f6534d336a62fdb9e88b186dd70b4323ef","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"452f1c9b76f7a122bbc4630b9691bda4809677c4","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"20f939b0c151d1d28e6b62a76b2454fa6fe877f2","versionType":"git"},{"version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","status":"affected","lessThan":"5bfd4b0b40b79781d900cb2f7da0685070f53c67","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/fils_aead.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/mac80211/fils_aead.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/de3297c8e521c0b0ddc89ece6fee84e25da9ecf0"},{"url":"https://git.kernel.org/stable/c/ce70c87252a14020cb40032efe208efc6e61b1ee"},{"url":"https://git.kernel.org/stable/c/d8c5dbbf584a1baaa008988ac64dd4495f7086bd"},{"url":"https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36"},{"url":"https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef"},{"url":"https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4"},{"url":"https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2"},{"url":"https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:38:50.641Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}