{"api_version":"1","generated_at":"2026-10-21T18:43:00+00:00","cve":"CVE-2026-98338","urls":{"html":"https://cve.report/CVE-2026-98338","api":"https://cve.report/api/cve/CVE-2026-98338.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98338","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98338"},"summary":{"title":"wifi: cfg80211: ibss: ref BSS entry for joined event","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing it. However, that's racy,\ne.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a\nwarning in the event work:\n\n  !bss\n  WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440\n  Workqueue: cfg80211 cfg80211_event_work\n   cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144\n   cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179\n   cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393\n\nDo the lookup early (the driver is expected to only join an IBSS that\nhas a BSS entry) and keep a reference to it.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-06 09:18:26","updated_at":"2026-10-19 10:18:36"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/708f9d43d6a2eb9c6b83fe62af628de9dffd9314","name":"https://git.kernel.org/stable/c/708f9d43d6a2eb9c6b83fe62af628de9dffd9314","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b","name":"https://git.kernel.org/stable/c/b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98338","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98338","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 667503ddcb96f3b10211f997fe55907fa7509841 b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 667503ddcb96f3b10211f997fe55907fa7509841 708f9d43d6a2eb9c6b83fe62af628de9dffd9314 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.32","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.32 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 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98338","cve":"CVE-2026-98338","epss":"0.001620000","percentile":"0.048430000","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":["net/wireless/core.h","net/wireless/ibss.c","net/wireless/util.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b","status":"affected","version":"667503ddcb96f3b10211f997fe55907fa7509841","versionType":"git"},{"lessThan":"708f9d43d6a2eb9c6b83fe62af628de9dffd9314","status":"affected","version":"667503ddcb96f3b10211f997fe55907fa7509841","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/wireless/core.h","net/wireless/ibss.c","net/wireless/util.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.32"},{"lessThan":"2.6.32","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.8","versionStartIncluding":"2.6.32","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"2.6.32","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing it. However, that's racy,\ne.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a\nwarning in the event work:\n\n  !bss\n  WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440\n  Workqueue: cfg80211 cfg80211_event_work\n   cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144\n   cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179\n   cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393\n\nDo the lookup early (the driver is expected to only join an IBSS that\nhas a BSS entry) and keep a reference to it."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:17:49.327Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b0e3f019e461ac42e45aa3ec1216cefaca2f4a8b"},{"url":"https://git.kernel.org/stable/c/708f9d43d6a2eb9c6b83fe62af628de9dffd9314"}],"title":"wifi: cfg80211: ibss: ref BSS entry for joined event","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98338","datePublished":"2026-10-06T08:46:29.213Z","dateReserved":"2026-09-25T10:25:14.342Z","dateUpdated":"2026-10-19T09:17:49.327Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-06 09:18:26","lastModifiedDate":"2026-10-19 10:18:36","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98338","Ordinal":"1","Title":"wifi: cfg80211: ibss: ref BSS entry for joined event","CVE":"CVE-2026-98338","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98338","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: ibss: ref BSS entry for joined event\n\nWhen the IBSS is joined, we only record the BSSID/channel in the event\nand look up the BSS entry when processing it. However, that's racy,\ne.g. a new scan with NL80211_SCAN_FLAG_FLUSH can remove it, causing a\nwarning in the event work:\n\n  !bss\n  WARNING: net/wireless/ibss.c:37 at __cfg80211_ibss_joined+0x3d3/0x440\n  Workqueue: cfg80211 cfg80211_event_work\n   cfg80211_process_wdev_events+0x39f/0x5b0 net/wireless/util.c:1144\n   cfg80211_process_rdev_events+0xa1/0x110 net/wireless/util.c:1179\n   cfg80211_event_work+0x2f/0x40 net/wireless/core.c:393\n\nDo the lookup early (the driver is expected to only join an IBSS that\nhas a BSS entry) and keep a reference to it.","Type":"Description","Title":"wifi: cfg80211: ibss: ref BSS entry for joined event"}]}}}