{"api_version":"1","generated_at":"2026-08-13T22:04:54+00:00","cve":"CVE-2026-68326","urls":{"html":"https://cve.report/CVE-2026-68326","api":"https://cve.report/api/cve/CVE-2026-68326.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68326","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68326"},"summary":{"title":"wifi: mwifiex: bound uAP association event IEs to the event buffer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound uAP association event IEs to the event buffer\n\nmwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the\n(re)association request IEs that the firmware copies into the event:\n\n\tsinfo->assoc_req_ies = &event->data[len];\n\tlen = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control;\n\tsinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len;\n\nevent->len is supplied by the device firmware and is never validated,\nand the subtraction is unchecked.  assoc_req_ies points into\nadapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the\nkmalloc()'d struct mwifiex_adapter.\n\nOn the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with\ncfg80211_find_ie(), whose for_each_element() loop dereferences each\nelement header.  A firmware-reported event->len larger than the bytes\nactually received makes assoc_req_ies_len describe IEs that extend past\nevent_body, so the walk reads out of the adapter slab object, a\nslab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie).\nAn event->len smaller than the header instead makes the int subtraction\nnegative, which wraps to a huge size_t when stored in assoc_req_ies_len.\nThe same length is handed to cfg80211_new_sta(), so a more modest\nover-claim can also copy stale event_body bytes into the\nNL80211_CMD_NEW_STATION notification.\n\nA malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver\nsuch an event while the interface is in AP/uAP mode.\n\nValidate event->len before use: reject a length that underflows the\nheader or that would place the IEs outside the event_body[] buffer the\nevent was copied into.  event->len here is struct mwifiex_assoc_event.len,\na payload field internal to this event, not the transport frame length,\nso it is validated in this handler rather than at the generic\nMWIFIEX_TYPE_EVENT receive path, which only sees the event cause and the\ntransport frame length.  The bound is against event_body[MAX_EVENT_SIZE]\nrather than the actually-received length because the transports store the\nevent differently (USB and SDIO leave the 4-byte event header in\nevent_skb, PCIe strips it via skb_pull), whereas event_body is the single\nfixed buffer all of them copy the event into.  This is the event-path\nanalogue of the receive-path bounds checks added in commit 119585281617\n(\"wifi: mwifiex: Fix OOB and integer underflow when rx packets\").","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:20:22","updated_at":"2026-08-10 13:20:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/ad26c75ae25749313248f06510ebe43b5bf4adcc","name":"https://git.kernel.org/stable/c/ad26c75ae25749313248f06510ebe43b5bf4adcc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c","name":"https://git.kernel.org/stable/c/d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f0858bfc7d3cab411a447b88e3ef970e575032c9","name":"https://git.kernel.org/stable/c/f0858bfc7d3cab411a447b88e3ef970e575032c9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b6766d7ea43edf5de9d5a572bc58b631d09efe4b","name":"https://git.kernel.org/stable/c/b6766d7ea43edf5de9d5a572bc58b631d09efe4b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a3f47d7c75ddad1a14621a309286f9fae3cba191","name":"https://git.kernel.org/stable/c/a3f47d7c75ddad1a14621a309286f9fae3cba191","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68326","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68326","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e568634ae7ac379661c90731d480e067929420a1 a3f47d7c75ddad1a14621a309286f9fae3cba191 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e568634ae7ac379661c90731d480e067929420a1 ad26c75ae25749313248f06510ebe43b5bf4adcc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e568634ae7ac379661c90731d480e067929420a1 d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e568634ae7ac379661c90731d480e067929420a1 b6766d7ea43edf5de9d5a572bc58b631d09efe4b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e568634ae7ac379661c90731d480e067929420a1 f0858bfc7d3cab411a447b88e3ef970e575032c9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/uap_event.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a3f47d7c75ddad1a14621a309286f9fae3cba191","status":"affected","version":"e568634ae7ac379661c90731d480e067929420a1","versionType":"git"},{"lessThan":"ad26c75ae25749313248f06510ebe43b5bf4adcc","status":"affected","version":"e568634ae7ac379661c90731d480e067929420a1","versionType":"git"},{"lessThan":"d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c","status":"affected","version":"e568634ae7ac379661c90731d480e067929420a1","versionType":"git"},{"lessThan":"b6766d7ea43edf5de9d5a572bc58b631d09efe4b","status":"affected","version":"e568634ae7ac379661c90731d480e067929420a1","versionType":"git"},{"lessThan":"f0858bfc7d3cab411a447b88e3ef970e575032c9","status":"affected","version":"e568634ae7ac379661c90731d480e067929420a1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/uap_event.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.5"},{"lessThan":"3.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"3.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"3.5","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound uAP association event IEs to the event buffer\n\nmwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the\n(re)association request IEs that the firmware copies into the event:\n\n\tsinfo->assoc_req_ies = &event->data[len];\n\tlen = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control;\n\tsinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len;\n\nevent->len is supplied by the device firmware and is never validated,\nand the subtraction is unchecked.  assoc_req_ies points into\nadapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the\nkmalloc()'d struct mwifiex_adapter.\n\nOn the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with\ncfg80211_find_ie(), whose for_each_element() loop dereferences each\nelement header.  A firmware-reported event->len larger than the bytes\nactually received makes assoc_req_ies_len describe IEs that extend past\nevent_body, so the walk reads out of the adapter slab object, a\nslab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie).\nAn event->len smaller than the header instead makes the int subtraction\nnegative, which wraps to a huge size_t when stored in assoc_req_ies_len.\nThe same length is handed to cfg80211_new_sta(), so a more modest\nover-claim can also copy stale event_body bytes into the\nNL80211_CMD_NEW_STATION notification.\n\nA malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver\nsuch an event while the interface is in AP/uAP mode.\n\nValidate event->len before use: reject a length that underflows the\nheader or that would place the IEs outside the event_body[] buffer the\nevent was copied into.  event->len here is struct mwifiex_assoc_event.len,\na payload field internal to this event, not the transport frame length,\nso it is validated in this handler rather than at the generic\nMWIFIEX_TYPE_EVENT receive path, which only sees the event cause and the\ntransport frame length.  The bound is against event_body[MAX_EVENT_SIZE]\nrather than the actually-received length because the transports store the\nevent differently (USB and SDIO leave the 4-byte event header in\nevent_skb, PCIe strips it via skb_pull), whereas event_body is the single\nfixed buffer all of them copy the event into.  This is the event-path\nanalogue of the receive-path bounds checks added in commit 119585281617\n(\"wifi: mwifiex: Fix OOB and integer underflow when rx packets\")."}],"providerMetadata":{"dateUpdated":"2026-08-10T12:03:02.372Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/a3f47d7c75ddad1a14621a309286f9fae3cba191"},{"url":"https://git.kernel.org/stable/c/ad26c75ae25749313248f06510ebe43b5bf4adcc"},{"url":"https://git.kernel.org/stable/c/d21464d93f8ba464dc3d7b4b31c6e0adcd9f659c"},{"url":"https://git.kernel.org/stable/c/b6766d7ea43edf5de9d5a572bc58b631d09efe4b"},{"url":"https://git.kernel.org/stable/c/f0858bfc7d3cab411a447b88e3ef970e575032c9"}],"title":"wifi: mwifiex: bound uAP association event IEs to the event buffer","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68326","datePublished":"2026-08-10T12:03:02.372Z","dateReserved":"2026-07-30T09:28:09.382Z","dateUpdated":"2026-08-10T12:03:02.372Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:20:22","lastModifiedDate":"2026-08-10 13:20:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68326","Ordinal":"1","Title":"wifi: mwifiex: bound uAP association event IEs to the event buff","CVE":"CVE-2026-68326","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68326","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound uAP association event IEs to the event buffer\n\nmwifiex_process_uap_event() handles EVENT_UAP_STA_ASSOC by exposing the\n(re)association request IEs that the firmware copies into the event:\n\n\tsinfo->assoc_req_ies = &event->data[len];\n\tlen = (u8 *)sinfo->assoc_req_ies - (u8 *)&event->frame_control;\n\tsinfo->assoc_req_ies_len = le16_to_cpu(event->len) - (u16)len;\n\nevent->len is supplied by the device firmware and is never validated,\nand the subtraction is unchecked.  assoc_req_ies points into\nadapter->event_body[MAX_EVENT_SIZE], a fixed-size array embedded in the\nkmalloc()'d struct mwifiex_adapter.\n\nOn the ap_11n_enabled path mwifiex_set_sta_ht_cap() walks these IEs with\ncfg80211_find_ie(), whose for_each_element() loop dereferences each\nelement header.  A firmware-reported event->len larger than the bytes\nactually received makes assoc_req_ies_len describe IEs that extend past\nevent_body, so the walk reads out of the adapter slab object, a\nslab-out-of-bounds read (KASAN: slab-out-of-bounds in cfg80211_find_ie).\nAn event->len smaller than the header instead makes the int subtraction\nnegative, which wraps to a huge size_t when stored in assoc_req_ies_len.\nThe same length is handed to cfg80211_new_sta(), so a more modest\nover-claim can also copy stale event_body bytes into the\nNL80211_CMD_NEW_STATION notification.\n\nA malicious or malfunctioning mwifiex device (USB/SDIO/PCIe) can deliver\nsuch an event while the interface is in AP/uAP mode.\n\nValidate event->len before use: reject a length that underflows the\nheader or that would place the IEs outside the event_body[] buffer the\nevent was copied into.  event->len here is struct mwifiex_assoc_event.len,\na payload field internal to this event, not the transport frame length,\nso it is validated in this handler rather than at the generic\nMWIFIEX_TYPE_EVENT receive path, which only sees the event cause and the\ntransport frame length.  The bound is against event_body[MAX_EVENT_SIZE]\nrather than the actually-received length because the transports store the\nevent differently (USB and SDIO leave the 4-byte event header in\nevent_skb, PCIe strips it via skb_pull), whereas event_body is the single\nfixed buffer all of them copy the event into.  This is the event-path\nanalogue of the receive-path bounds checks added in commit 119585281617\n(\"wifi: mwifiex: Fix OOB and integer underflow when rx packets\").","Type":"Description","Title":"wifi: mwifiex: bound uAP association event IEs to the event buff"}]}}}