{"api_version":"1","generated_at":"2026-10-26T06:23:23+00:00","cve":"CVE-2026-98887","urls":{"html":"https://cve.report/CVE-2026-98887","api":"https://cve.report/api/cve/CVE-2026-98887.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98887","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98887"},"summary":{"title":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 12:18:22","updated_at":"2026-10-23 12:18:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695","name":"https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f","name":"https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7","name":"https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4","name":"https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721","name":"https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046","name":"https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8","name":"https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98887","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98887","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 3a96bb65b4b820d8b41fa155781ec1c29e3479d4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 59e1f2a0242232b4a3af144ae317d3913fc09046 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 1ae85bb34fe3510659b86d6a5f8036dd498233f8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs."}],"providerMetadata":{"dateUpdated":"2026-10-23T11:37:44.605Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"},{"url":"https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"},{"url":"https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"},{"url":"https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"},{"url":"https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"},{"url":"https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"},{"url":"https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"}],"title":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98887","datePublished":"2026-10-23T11:37:44.605Z","dateReserved":"2026-09-25T10:25:14.378Z","dateUpdated":"2026-10-23T11:37:44.605Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 12:18:22","lastModifiedDate":"2026-10-23 12:18:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98887","Ordinal":"1","Title":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO","CVE":"CVE-2026-98887","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98887","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs.","Type":"Description","Title":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO"}]}}}