{"api_version":"1","generated_at":"2026-10-27T16:46:35+00:00","cve":"CVE-2026-98698","urls":{"html":"https://cve.report/CVE-2026-98698","api":"https://cve.report/api/cve/CVE-2026-98698.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98698","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98698"},"summary":{"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:23","updated_at":"2026-10-21 13:21:37"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4","name":"https://git.kernel.org/stable/c/452f1c9b76f7a122bbc4630b9691bda4809677c4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","name":"https://git.kernel.org/stable/c/0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67","name":"https://git.kernel.org/stable/c/5bfd4b0b40b79781d900cb2f7da0685070f53c67","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2","name":"https://git.kernel.org/stable/c/20f939b0c151d1d28e6b62a76b2454fa6fe877f2","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef","name":"https://git.kernel.org/stable/c/2f5b62f6534d336a62fdb9e88b186dd70b4323ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98698","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98698","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 0b1e4a7eeb6a301ee33bd318982927cbdbae9f36 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 2f5b62f6534d336a62fdb9e88b186dd70b4323ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 452f1c9b76f7a122bbc4630b9691bda4809677c4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 20f939b0c151d1d28e6b62a76b2454fa6fe877f2 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 39404feee691a2dc524a629ed6eb5cfe5d8898d1 5bfd4b0b40b79781d900cb2f7da0685070f53c67 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98698","cve":"CVE-2026-98698","epss":"0.001680000","percentile":"0.057140000","score_date":"2026-10-21","updated_at":"2026-10-22 00:15:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mac80211/fils_aead.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"0b1e4a7eeb6a301ee33bd318982927cbdbae9f36","status":"affected","version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","versionType":"git"},{"lessThan":"2f5b62f6534d336a62fdb9e88b186dd70b4323ef","status":"affected","version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","versionType":"git"},{"lessThan":"452f1c9b76f7a122bbc4630b9691bda4809677c4","status":"affected","version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","versionType":"git"},{"lessThan":"20f939b0c151d1d28e6b62a76b2454fa6fe877f2","status":"affected","version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","versionType":"git"},{"lessThan":"5bfd4b0b40b79781d900cb2f7da0685070f53c67","status":"affected","version":"39404feee691a2dc524a629ed6eb5cfe5d8898d1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/fils_aead.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.10"},{"lessThan":"4.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"4.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-10-21T12:55:47.911Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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"}],"title":"wifi: mac80211: handle empty FILS association request payload","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98698","datePublished":"2026-10-18T15:46:23.363Z","dateReserved":"2026-09-25T10:25:14.365Z","dateUpdated":"2026-10-21T12:55:47.911Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:23","lastModifiedDate":"2026-10-21 13:21:37","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98698","Ordinal":"1","Title":"wifi: mac80211: handle empty FILS association request payload","CVE":"CVE-2026-98698","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98698","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"wifi: mac80211: handle empty FILS association request payload"}]}}}