{"api_version":"1","generated_at":"2026-09-17T20:26:10+00:00","cve":"CVE-2026-93149","urls":{"html":"https://cve.report/CVE-2026-93149","api":"https://cve.report/api/cve/CVE-2026-93149.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93149","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93149"},"summary":{"title":"wifi: mac80211_hwsim: avoid NULL skb in stop queue drain","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data->pending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:10","updated_at":"2026-09-17 17:18:10"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749","name":"https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede","name":"https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b","name":"https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e","name":"https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435","name":"https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b","name":"https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93149","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93149","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 d131027054a8dd922dda01fe8d381abe5af4970b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 c40ba47f2ba1951cb32ea048667ed014d36a5749 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 2817431a61557f46dc63077b7cc126bc906c242e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 e7fccad2c8e6ef6bbafe509c95869d161d0f466b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 1c2a4ab6efa26415dd131b8c222e7893fda03435 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bd18de517923903a177508fc8813f44e717b1c00 158438cd6ad69d6dd7d871582c38baf22169fede git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 78bf3c6131488b00386acd9aff1ea4e6c44fa38e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected a9028333001f793b2724e8be42fce3336de2cf1c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7019c9f385b264a2d6f685028268422d55087e37 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.4.129 5.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.47 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.12.14 5.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.13","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.13 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d131027054a8dd922dda01fe8d381abe5af4970b","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"lessThan":"c40ba47f2ba1951cb32ea048667ed014d36a5749","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"lessThan":"2817431a61557f46dc63077b7cc126bc906c242e","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"lessThan":"e7fccad2c8e6ef6bbafe509c95869d161d0f466b","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"lessThan":"1c2a4ab6efa26415dd131b8c222e7893fda03435","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"lessThan":"158438cd6ad69d6dd7d871582c38baf22169fede","status":"affected","version":"bd18de517923903a177508fc8813f44e717b1c00","versionType":"git"},{"status":"affected","version":"78bf3c6131488b00386acd9aff1ea4e6c44fa38e","versionType":"git"},{"status":"affected","version":"a9028333001f793b2724e8be42fce3336de2cf1c","versionType":"git"},{"status":"affected","version":"7019c9f385b264a2d6f685028268422d55087e37","versionType":"git"},{"lessThan":"5.5","status":"affected","version":"5.4.129","versionType":"semver"},{"lessThan":"5.11","status":"affected","version":"5.10.47","versionType":"semver"},{"lessThan":"5.13","status":"affected","version":"5.12.14","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.13"},{"lessThan":"5.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"5.13","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.4.129","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.47","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.12.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data->pending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:46.136Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b"},{"url":"https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749"},{"url":"https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e"},{"url":"https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b"},{"url":"https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435"},{"url":"https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"}],"title":"wifi: mac80211_hwsim: avoid NULL skb in stop queue drain","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93149","datePublished":"2026-09-17T16:11:46.136Z","dateReserved":"2026-09-17T16:02:15.088Z","dateUpdated":"2026-09-17T16:11:46.136Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:10","lastModifiedDate":"2026-09-17 17:18:10","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93149","Ordinal":"1","Title":"wifi: mac80211_hwsim: avoid NULL skb in stop queue drain","CVE":"CVE-2026-93149","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93149","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: avoid NULL skb in stop queue drain\n\nmac80211_hwsim_stop() drops any frames left in data->pending. The loop\ncurrently checks skb_queue_empty() and then dequeues separately.\n\nThat split is racy with TX status handling, which can remove a pending\nframe under the queue lock. If the last entry is removed after the empty\ncheck, skb_dequeue() returns NULL and the stop path passes that NULL skb\nto ieee80211_free_txskb().\n\nUse skb_dequeue() as the loop condition instead. The dequeue result is the\nobject that stop owns and frees, and a concurrent status completion that\nempties the queue simply makes the loop terminate.","Type":"Description","Title":"wifi: mac80211_hwsim: avoid NULL skb in stop queue drain"}]}}}