{"api_version":"1","generated_at":"2026-10-11T12:10:38+00:00","cve":"CVE-2026-98184","urls":{"html":"https://cve.report/CVE-2026-98184","api":"https://cve.report/api/cve/CVE-2026-98184.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98184","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98184"},"summary":{"title":"wifi: mwifiex: prevent authentication frame length truncation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: prevent authentication frame length truncation\n\nmwifiex_cfg80211_authenticate() derives the authentication frame length\nfrom req->ie_len and req->auth_data_len, both of type size_t, but stores\nit in a u16.\n\nNL80211_ATTR_AUTH_DATA only has a minimum length policy. Since nla_len is\na u16, a single attribute can carry up to 65531 bytes of payload, so the\nsum can exceed U16_MAX before it is assigned to pkt_len. The truncated\npkt_len determines the skb frame area, while the copy length remains\nreq->auth_data_len - 4, resulting in a heap buffer overflow.\n\nFor example, with auth_data_len equal to 65510 and no IEs, the sum is\n65546. It is truncated to 10 and then reduced by four to 6. The driver\nappends only six bytes to the skb with skb_put(), but then copies 65506\nuser-provided bytes into the authentication body.\n\nReaching this path requires CAP_NET_ADMIN in the user namespace owning\nthe network namespace, an up station netdev, and a suitable BSS/SAE\nauthentication request.\n\nCompute the length in size_t, reject values that cannot be represented by\nthe firmware's u16 frame length field, and only then assign it to pkt_len.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:03","updated_at":"2026-10-06 09:18:03"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/fa00193eb991f92b007aefe7afb6a7566976dacf","name":"https://git.kernel.org/stable/c/fa00193eb991f92b007aefe7afb6a7566976dacf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/877b61a67d5eb3e616478daf3908114b57feff1e","name":"https://git.kernel.org/stable/c/877b61a67d5eb3e616478daf3908114b57feff1e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5747eaa38a7fcad48be2fd910b65008198b2b06c","name":"https://git.kernel.org/stable/c/5747eaa38a7fcad48be2fd910b65008198b2b06c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/25c45a2075cc00faed45f92a64bb172fb074a2ee","name":"https://git.kernel.org/stable/c/25c45a2075cc00faed45f92a64bb172fb074a2ee","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98184","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98184","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36995892c271cce5e2230bc165a06f109b117222 25c45a2075cc00faed45f92a64bb172fb074a2ee git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36995892c271cce5e2230bc165a06f109b117222 5747eaa38a7fcad48be2fd910b65008198b2b06c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36995892c271cce5e2230bc165a06f109b117222 877b61a67d5eb3e616478daf3908114b57feff1e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 36995892c271cce5e2230bc165a06f109b117222 fa00193eb991f92b007aefe7afb6a7566976dacf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.112 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.54 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.8 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc4 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98184","cve":"CVE-2026-98184","epss":"0.002710000","percentile":"0.176260000","score_date":"2026-10-06","updated_at":"2026-10-07 00:14:55"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/cfg80211.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"25c45a2075cc00faed45f92a64bb172fb074a2ee","status":"affected","version":"36995892c271cce5e2230bc165a06f109b117222","versionType":"git"},{"lessThan":"5747eaa38a7fcad48be2fd910b65008198b2b06c","status":"affected","version":"36995892c271cce5e2230bc165a06f109b117222","versionType":"git"},{"lessThan":"877b61a67d5eb3e616478daf3908114b57feff1e","status":"affected","version":"36995892c271cce5e2230bc165a06f109b117222","versionType":"git"},{"lessThan":"fa00193eb991f92b007aefe7afb6a7566976dacf","status":"affected","version":"36995892c271cce5e2230bc165a06f109b117222","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/cfg80211.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.12"},{"lessThan":"6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.112","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.54","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc4","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: prevent authentication frame length truncation\n\nmwifiex_cfg80211_authenticate() derives the authentication frame length\nfrom req->ie_len and req->auth_data_len, both of type size_t, but stores\nit in a u16.\n\nNL80211_ATTR_AUTH_DATA only has a minimum length policy. Since nla_len is\na u16, a single attribute can carry up to 65531 bytes of payload, so the\nsum can exceed U16_MAX before it is assigned to pkt_len. The truncated\npkt_len determines the skb frame area, while the copy length remains\nreq->auth_data_len - 4, resulting in a heap buffer overflow.\n\nFor example, with auth_data_len equal to 65510 and no IEs, the sum is\n65546. It is truncated to 10 and then reduced by four to 6. The driver\nappends only six bytes to the skb with skb_put(), but then copies 65506\nuser-provided bytes into the authentication body.\n\nReaching this path requires CAP_NET_ADMIN in the user namespace owning\nthe network namespace, an up station netdev, and a suitable BSS/SAE\nauthentication request.\n\nCompute the length in size_t, reject values that cannot be represented by\nthe firmware's u16 frame length field, and only then assign it to pkt_len."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:44:26.836Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/25c45a2075cc00faed45f92a64bb172fb074a2ee"},{"url":"https://git.kernel.org/stable/c/5747eaa38a7fcad48be2fd910b65008198b2b06c"},{"url":"https://git.kernel.org/stable/c/877b61a67d5eb3e616478daf3908114b57feff1e"},{"url":"https://git.kernel.org/stable/c/fa00193eb991f92b007aefe7afb6a7566976dacf"}],"title":"wifi: mwifiex: prevent authentication frame length truncation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98184","datePublished":"2026-10-06T08:44:26.836Z","dateReserved":"2026-09-25T10:25:14.323Z","dateUpdated":"2026-10-06T08:44:26.836Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:03","lastModifiedDate":"2026-10-06 09:18:03","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98184","Ordinal":"1","Title":"wifi: mwifiex: prevent authentication frame length truncation","CVE":"CVE-2026-98184","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98184","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: prevent authentication frame length truncation\n\nmwifiex_cfg80211_authenticate() derives the authentication frame length\nfrom req->ie_len and req->auth_data_len, both of type size_t, but stores\nit in a u16.\n\nNL80211_ATTR_AUTH_DATA only has a minimum length policy. Since nla_len is\na u16, a single attribute can carry up to 65531 bytes of payload, so the\nsum can exceed U16_MAX before it is assigned to pkt_len. The truncated\npkt_len determines the skb frame area, while the copy length remains\nreq->auth_data_len - 4, resulting in a heap buffer overflow.\n\nFor example, with auth_data_len equal to 65510 and no IEs, the sum is\n65546. It is truncated to 10 and then reduced by four to 6. The driver\nappends only six bytes to the skb with skb_put(), but then copies 65506\nuser-provided bytes into the authentication body.\n\nReaching this path requires CAP_NET_ADMIN in the user namespace owning\nthe network namespace, an up station netdev, and a suitable BSS/SAE\nauthentication request.\n\nCompute the length in size_t, reject values that cannot be represented by\nthe firmware's u16 frame length field, and only then assign it to pkt_len.","Type":"Description","Title":"wifi: mwifiex: prevent authentication frame length truncation"}]}}}