{"api_version":"1","generated_at":"2026-07-20T14:43:37+00:00","cve":"CVE-2026-64117","urls":{"html":"https://cve.report/CVE-2026-64117","api":"https://cve.report/api/cve/CVE-2026-64117.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64117","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64117"},"summary":{"title":"wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: capture fast-RX rate before mesh reuses skb->cb\n\nieee80211_invoke_fast_rx() reads RX status through\nIEEE80211_SKB_RXCB(skb), which aliases the same skb->cb storage\nthat ieee80211_rx_mesh_data() reuses as IEEE80211_TX_INFO.  In the\nunicast forward path, mesh_data does:\n\n\tinfo = IEEE80211_SKB_CB(fwd_skb);\n\tmemset(info, 0, sizeof(*info));\n\non the same skb the caller still names via rx->skb, then either\nqueues the skb for TX (success) or kfree_skb()'s it (no-route)\nbefore returning RX_QUEUED.  The caller's RX_QUEUED arm then\ncalls sta_stats_encode_rate(status) on memory that is either\nzeroed (success path) or freed (no-route path).  The latter is\nKASAN slab-use-after-free in ieee80211_prepare_and_rx_handle.\n\nFix by encoding the rate from status before invoking\nieee80211_rx_mesh_data(), so the RX_QUEUED arm consumes a value\ncaptured while status was still backed by valid memory.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 16:17:53","updated_at":"2026-07-19 16:17:53"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349","name":"https://git.kernel.org/stable/c/d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2fb64f94f9afb774f2fa0c7835727d7a67f89f07","name":"https://git.kernel.org/stable/c/2fb64f94f9afb774f2fa0c7835727d7a67f89f07","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64117","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64117","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3468e1e0c639032a603450f0830ccabfa76f5806 2fb64f94f9afb774f2fa0c7835727d7a67f89f07 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3468e1e0c639032a603450f0830ccabfa76f5806 d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.11 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * 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":["net/mac80211/rx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"2fb64f94f9afb774f2fa0c7835727d7a67f89f07","status":"affected","version":"3468e1e0c639032a603450f0830ccabfa76f5806","versionType":"git"},{"lessThan":"d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349","status":"affected","version":"3468e1e0c639032a603450f0830ccabfa76f5806","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac80211/rx.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.11","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: capture fast-RX rate before mesh reuses skb->cb\n\nieee80211_invoke_fast_rx() reads RX status through\nIEEE80211_SKB_RXCB(skb), which aliases the same skb->cb storage\nthat ieee80211_rx_mesh_data() reuses as IEEE80211_TX_INFO.  In the\nunicast forward path, mesh_data does:\n\n\tinfo = IEEE80211_SKB_CB(fwd_skb);\n\tmemset(info, 0, sizeof(*info));\n\non the same skb the caller still names via rx->skb, then either\nqueues the skb for TX (success) or kfree_skb()'s it (no-route)\nbefore returning RX_QUEUED.  The caller's RX_QUEUED arm then\ncalls sta_stats_encode_rate(status) on memory that is either\nzeroed (success path) or freed (no-route path).  The latter is\nKASAN slab-use-after-free in ieee80211_prepare_and_rx_handle.\n\nFix by encoding the rate from status before invoking\nieee80211_rx_mesh_data(), so the RX_QUEUED arm consumes a value\ncaptured while status was still backed by valid memory."}],"providerMetadata":{"dateUpdated":"2026-07-19T15:40:16.941Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/2fb64f94f9afb774f2fa0c7835727d7a67f89f07"},{"url":"https://git.kernel.org/stable/c/d71c841be5d9e586ee7f36c0dc8ed4db0d9a1349"}],"title":"wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64117","datePublished":"2026-07-19T15:40:16.941Z","dateReserved":"2026-07-19T07:54:57.035Z","dateUpdated":"2026-07-19T15:40:16.941Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 16:17:53","lastModifiedDate":"2026-07-19 16:17:53","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64117","Ordinal":"1","Title":"wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb","CVE":"CVE-2026-64117","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64117","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: capture fast-RX rate before mesh reuses skb->cb\n\nieee80211_invoke_fast_rx() reads RX status through\nIEEE80211_SKB_RXCB(skb), which aliases the same skb->cb storage\nthat ieee80211_rx_mesh_data() reuses as IEEE80211_TX_INFO.  In the\nunicast forward path, mesh_data does:\n\n\tinfo = IEEE80211_SKB_CB(fwd_skb);\n\tmemset(info, 0, sizeof(*info));\n\non the same skb the caller still names via rx->skb, then either\nqueues the skb for TX (success) or kfree_skb()'s it (no-route)\nbefore returning RX_QUEUED.  The caller's RX_QUEUED arm then\ncalls sta_stats_encode_rate(status) on memory that is either\nzeroed (success path) or freed (no-route path).  The latter is\nKASAN slab-use-after-free in ieee80211_prepare_and_rx_handle.\n\nFix by encoding the rate from status before invoking\nieee80211_rx_mesh_data(), so the RX_QUEUED arm consumes a value\ncaptured while status was still backed by valid memory.","Type":"Description","Title":"wifi: mac80211: capture fast-RX rate before mesh reuses skb->cb"}]}}}