{"api_version":"1","generated_at":"2026-10-15T03:12:40+00:00","cve":"CVE-2026-98183","urls":{"html":"https://cve.report/CVE-2026-98183","api":"https://cve.report/api/cve/CVE-2026-98183.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98183","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98183"},"summary":{"title":"wifi: mac80211: avoid out-of-bounds read for empty PREQ elements","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present.","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/e6031f02269c0f51cf67886d177f02bc300b47cd","name":"https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a","name":"https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98183","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98183","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae 3beddbd56946577478fd5e649f556aaaebe15b0a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae e6031f02269c0f51cf67886d177f02bc300b47cd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 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":"98183","cve":"CVE-2026-98183","epss":"0.001620000","percentile":"0.048450000","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":["include/linux/ieee80211-mesh.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"3beddbd56946577478fd5e649f556aaaebe15b0a","status":"affected","version":"8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae","versionType":"git"},{"lessThan":"e6031f02269c0f51cf67886d177f02bc300b47cd","status":"affected","version":"8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/ieee80211-mesh.h"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"7.2"},{"lessThan":"7.2","status":"unaffected","version":"0","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":"7.2.8","versionStartIncluding":"7.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc4","versionStartIncluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present."}],"providerMetadata":{"dateUpdated":"2026-10-06T08:44:26.024Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a"},{"url":"https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd"}],"title":"wifi: mac80211: avoid out-of-bounds read for empty PREQ elements","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98183","datePublished":"2026-10-06T08:44:26.024Z","dateReserved":"2026-09-25T10:25:14.323Z","dateUpdated":"2026-10-06T08:44:26.024Z","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":"98183","Ordinal":"1","Title":"wifi: mac80211: avoid out-of-bounds read for empty PREQ elements","CVE":"CVE-2026-98183","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98183","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present.","Type":"Description","Title":"wifi: mac80211: avoid out-of-bounds read for empty PREQ elements"}]}}}