{"id":"CVE-2026-93149","revision":"e328eee8713f4c309606e14ef0dab237","records":[{"revision":"e328eee8713f4c309606e14ef0dab237","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93149","aliases":[],"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":0,"publishedAt":"2026-09-17T16:11:46.136+00:00","modifiedAt":"2026-10-19T09:06:21.596+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/virtual/mac80211_hwsim_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"d131027054a8dd922dda01fe8d381abe5af4970b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"c40ba47f2ba1951cb32ea048667ed014d36a5749\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"2817431a61557f46dc63077b7cc126bc906c242e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"e7fccad2c8e6ef6bbafe509c95869d161d0f466b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"1c2a4ab6efa26415dd131b8c222e7893fda03435\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd18de517923903a177508fc8813f44e717b1c00\",\n                            \"lessThan\": \"158438cd6ad69d6dd7d871582c38baf22169fede\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"78bf3c6131488b00386acd9aff1ea4e6c44fa38e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a9028333001f793b2724e8be42fce3336de2cf1c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7019c9f385b264a2d6f685028268422d55087e37\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"5.4.129\",\n                            \"lessThan\": \"5.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.47\",\n                            \"lessThan\": \"5.11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.12.14\",\n                            \"lessThan\": \"5.13\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/virtual/mac80211_hwsim_main.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.13\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.13\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d131027054a8dd922dda01fe8d381abe5af4970b","https://git.kernel.org/stable/c/c40ba47f2ba1951cb32ea048667ed014d36a5749","https://git.kernel.org/stable/c/2817431a61557f46dc63077b7cc126bc906c242e","https://git.kernel.org/stable/c/e7fccad2c8e6ef6bbafe509c95869d161d0f466b","https://git.kernel.org/stable/c/1c2a4ab6efa26415dd131b8c222e7893fda03435","https://git.kernel.org/stable/c/158438cd6ad69d6dd7d871582c38baf22169fede"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-93149","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-93149","identifiers":["CVE-2026-93149"]},"retained":false,"historicalAffected":[]}],"coverage":[]}