{"api_version":"1","generated_at":"2026-10-08T08:02:31+00:00","cve":"CVE-2026-98186","urls":{"html":"https://cve.report/CVE-2026-98186","api":"https://cve.report/api/cve/CVE-2026-98186.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98186","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98186"},"summary":{"title":"wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length\n\nmwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a\nbeacon/probe-response RSN or WPA information element and then walks that\nmany 4-byte OUIs, comparing each with memcmp(). The count comes straight\nfrom the (attacker-supplied) IE and is never checked against the\nelement's own length, and the callers admit the element on element_id\nalone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted\nRSN/WPA IE with a large pairwise count therefore makes the walk read up\nto 255 * 4 bytes past the element -- an out-of-bounds read of the\nkmemdup()'d beacon buffer, reachable from any AP whose beacon/probe\nresponse is processed during scan-result parsing.\n\nPass the number of IE bytes available at the OUI list and bound the walk\nto the element. Keep the length signed and reject a negative value\nbefore any unsigned arithmetic, so a small or zero IE length cannot\nunderflow to a large size_t and defeat the bound.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","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/58767b41f87244eebaa5a475b9d276c83b89b933","name":"https://git.kernel.org/stable/c/58767b41f87244eebaa5a475b9d276c83b89b933","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857","name":"https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df","name":"https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959","name":"https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960","name":"https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799","name":"https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2402c9e2644b7e10c7aaaf87bf12743d7e363559","name":"https://git.kernel.org/stable/c/2402c9e2644b7e10c7aaaf87bf12743d7e363559","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed","name":"https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98186","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98186","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 77e642af7f2f6029e12a35c847c56cbd0466e799 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 58767b41f87244eebaa5a475b9d276c83b89b933 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 2402c9e2644b7e10c7aaaf87bf12743d7e363559 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 54a9cc5bd70b0d77a5069d4c46998c679a10c857 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e 46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e e667aee1c192d67d27c803007bfa9c6e0873e959 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.271 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.222 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.189 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* 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":"98186","cve":"CVE-2026-98186","epss":"0.001840000","percentile":"0.073000000","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/scan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"77e642af7f2f6029e12a35c847c56cbd0466e799","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"58767b41f87244eebaa5a475b9d276c83b89b933","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"2402c9e2644b7e10c7aaaf87bf12743d7e363559","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"54a9cc5bd70b0d77a5069d4c46998c679a10c857","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"},{"lessThan":"e667aee1c192d67d27c803007bfa9c6e0873e959","status":"affected","version":"5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/marvell/mwifiex/scan.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.0"},{"lessThan":"3.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.271","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","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":"5.10.271","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.112","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.54","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"3.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"3.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length\n\nmwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a\nbeacon/probe-response RSN or WPA information element and then walks that\nmany 4-byte OUIs, comparing each with memcmp(). The count comes straight\nfrom the (attacker-supplied) IE and is never checked against the\nelement's own length, and the callers admit the element on element_id\nalone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted\nRSN/WPA IE with a large pairwise count therefore makes the walk read up\nto 255 * 4 bytes past the element -- an out-of-bounds read of the\nkmemdup()'d beacon buffer, reachable from any AP whose beacon/probe\nresponse is processed during scan-result parsing.\n\nPass the number of IE bytes available at the OUI list and bound the walk\nto the element. Keep the length signed and reject a negative value\nbefore any unsigned arithmetic, so a small or zero IE length cannot\nunderflow to a large size_t and defeat the bound.\n\nFound by 0sec automated security-research tooling (https://0sec.ai)."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:44:28.429Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799"},{"url":"https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed"},{"url":"https://git.kernel.org/stable/c/58767b41f87244eebaa5a475b9d276c83b89b933"},{"url":"https://git.kernel.org/stable/c/2402c9e2644b7e10c7aaaf87bf12743d7e363559"},{"url":"https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857"},{"url":"https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960"},{"url":"https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df"},{"url":"https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959"}],"title":"wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98186","datePublished":"2026-10-06T08:44:28.429Z","dateReserved":"2026-09-25T10:25:14.323Z","dateUpdated":"2026-10-06T08:44:28.429Z","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":"98186","Ordinal":"1","Title":"wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE leng","CVE":"CVE-2026-98186","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98186","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length\n\nmwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a\nbeacon/probe-response RSN or WPA information element and then walks that\nmany 4-byte OUIs, comparing each with memcmp(). The count comes straight\nfrom the (attacker-supplied) IE and is never checked against the\nelement's own length, and the callers admit the element on element_id\nalone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted\nRSN/WPA IE with a large pairwise count therefore makes the walk read up\nto 255 * 4 bytes past the element -- an out-of-bounds read of the\nkmemdup()'d beacon buffer, reachable from any AP whose beacon/probe\nresponse is processed during scan-result parsing.\n\nPass the number of IE bytes available at the OUI list and bound the walk\nto the element. Keep the length signed and reject a negative value\nbefore any unsigned arithmetic, so a small or zero IE length cannot\nunderflow to a large size_t and defeat the bound.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).","Type":"Description","Title":"wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE leng"}]}}}