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vuln-cve/data/2026/93xxx/CVE-2026-93804.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-93804",
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"state": "PUBLISHED",
"assignerShortName": "Linux",
"dateReserved": "2026-09-18T17:59:28.790Z",
"datePublished": "2026-09-24T16:02:38.223Z",
"dateUpdated": "2026-10-30T12:36:48.169Z"
},
"containers": {
"cna": {
"providerMetadata": {
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux",
"dateUpdated": "2026-10-30T12:36:48.169Z"
},
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: ibss: wait for in-flight TX on disconnect\n\nWhile leaving an IBSS in ieee80211_ibss_disconnect() mac80211 flushes\nstations, turns the carrier off and immediately tells the driver to\nleave as well. While there may be synchronize_net() in station flush\nand in this code later, packets can still be transmitted due to\ncross-CPU race conditions after carrier off is set.\nTherefore, it's possible for a race to happen where a TX to the\ndriver occurs while or after telling it to leave the IBSS. This can\nbe confusing to drivers, and in the case of iwlwifi leads to an\nattempt to use invalid queues.\n\nMove netif_carrier_off() to occur before sta_info_flush() during\nIBSS disconnect, and add synchronize_net() if flushing didn't,\nso that the synchronize_net() always happens between turning the\ncarrier off and telling the driver, avoiding this race."
}
],
"affected": [
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/mac80211/ibss.c"
],
"versions": [
{
"version": "86a2ea4134b48f6371103cfceb521bf2d2bf76cd",
"lessThan": "47185b5dbac264e7eb48c6d44368be6bfec17085",
"status": "affected",
"versionType": "git"
},
{
"version": "86a2ea4134b48f6371103cfceb521bf2d2bf76cd",
"lessThan": "8e4a07ed82bae5d13525770880dc6dfd27f9bccd",
"status": "affected",
"versionType": "git"
},
{
"version": "86a2ea4134b48f6371103cfceb521bf2d2bf76cd",
"lessThan": "20a3fb5e1a95caa34896853ca17a50d21c754969",
"status": "affected",
"versionType": "git"
},
{
"version": "86a2ea4134b48f6371103cfceb521bf2d2bf76cd",
"lessThan": "b3451e6971248250312ad32dd7f63cc9f0a925f5",
"status": "affected",
"versionType": "git"
},
{
"version": "86a2ea4134b48f6371103cfceb521bf2d2bf76cd",
"lessThan": "d0e69d9afa59b93c30294eba89b1f15f69e91105",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/mac80211/ibss.c"
],
"versions": [
{
"version": "3.3",
"status": "affected"
},
{
"version": "0",
"lessThan": "3.3",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.12.111",
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "6.18.53",
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"versionType": "semver"
},
{
"version": "7.2",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.3",
"versionEndExcluding": "6.1.191"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.3",
"versionEndExcluding": "6.6.160"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.3",
"versionEndExcluding": "6.12.111"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.3",
"versionEndExcluding": "6.18.53"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "3.3",
"versionEndExcluding": "7.2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/47185b5dbac264e7eb48c6d44368be6bfec17085"
},
{
"url": "https://git.kernel.org/stable/c/8e4a07ed82bae5d13525770880dc6dfd27f9bccd"
},
{
"url": "https://git.kernel.org/stable/c/20a3fb5e1a95caa34896853ca17a50d21c754969"
},
{
"url": "https://git.kernel.org/stable/c/b3451e6971248250312ad32dd7f63cc9f0a925f5"
},
{
"url": "https://git.kernel.org/stable/c/d0e69d9afa59b93c30294eba89b1f15f69e91105"
}
],
"title": "wifi: mac80211: ibss: wait for in-flight TX on disconnect",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
}
}