CVE-2026-98936
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: reset ar->num_stations on hardware start When (multiple) hw restart occurs, we end up in a situation where we cannot accept new stations / mesh peers. This seems to be the 'num_stations' in 'struct ath11k' that did not get reset properly in this case. In ath11k_mac_op_start(), it was indeed the only accounting var that did not get reset so let's clear it too. This avoids problems like those: [1248828.088023] WARNING: CPU: 0 PID: 12281 at net/mac80211/util.c:1682 ieee80211_reconfig_stations+0x98/0xc0 [1248828.088115] Call trace: [1248828.088116] ieee80211_reconfig_stations+0x98/0xc0 (P) [1248828.088119] ieee80211_reconfig+0x774/0x1438 [1248828.088123] ieee80211_restart_work+0x10c/0x178 [1248828.088127] process_one_work+0x178/0x3c0 [1248828.088130] worker_thread+0x280/0x440 [1248828.088133] kthread+0xe0/0xf8 [1248828.088137] ret_from_fork+0x10/0x20 [1248828.088141] ---[ end trace 0000000000000000 ]--- [1248836.686604] ath11k_pci 0000:04:00.0: refusing to associate station: too many connected already (128) [1248836.686609] ath11k_pci 0000:04:00.0: Failed to add station: xx:xx:xx:xx:xx:xx for VDEV: 1 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.9.0.1-01977-QCAHKSWPL_SILICONZ-1
Severity
Not scored
CVSS score
Not available
Vulnerability status
Received
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-10-23 13:17:14.490000
Last modified
2026-10-30 13:21:32.137000
View original CVE JSON
{
"id": "CVE-2026-98936",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-10-23T13:17:14.490",
"lastModified": "2026-10-30T13:21:32.137",
"vulnStatus": "Received",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: reset ar->num_stations on hardware start\n\nWhen (multiple) hw restart occurs, we end up in a situation where we\ncannot accept new stations / mesh peers. This seems to be the\n'num_stations' in 'struct ath11k' that did not get reset properly in\nthis case. In ath11k_mac_op_start(), it was indeed the only accounting var\nthat did not get reset so let's clear it too.\n\nThis avoids problems like those:\n\n\t[1248828.088023] WARNING: CPU: 0 PID: 12281 at net/mac80211/util.c:1682 ieee80211_reconfig_stations+0x98/0xc0\n\t[1248828.088115] Call trace:\n\t[1248828.088116] ieee80211_reconfig_stations+0x98/0xc0 (P)\n\t[1248828.088119] ieee80211_reconfig+0x774/0x1438\n\t[1248828.088123] ieee80211_restart_work+0x10c/0x178\n\t[1248828.088127] process_one_work+0x178/0x3c0\n\t[1248828.088130] worker_thread+0x280/0x440\n\t[1248828.088133] kthread+0xe0/0xf8\n\t[1248828.088137] ret_from_fork+0x10/0x20\n\t[1248828.088141] ---[ end trace 0000000000000000 ]---\n\t[1248836.686604] ath11k_pci 0000:04:00.0: refusing to associate station: too many connected already (128)\n\t[1248836.686609] ath11k_pci 0000:04:00.0: Failed to add station: xx:xx:xx:xx:xx:xx for VDEV: 1\n\nTested-on: QCN9074 hw1.0 PCI WLAN.HK.2.9.0.1-01977-QCAHKSWPL_SILICONZ-1"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/net/wireless/ath/ath11k/mac.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "302b622d5f3c9ef5efa36e41e69d278599265cfc",
"versionType": "git",
"status": "affected"
},
{
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "5f814ca9a68fd12a51fe82c36a4a876f5b8329f1",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "a78f2d082f72e3c140c4542cade7f7f56f3cc62d",
"versionType": "git",
"status": "affected"
},
{
"version": "d5c65159f2895379e11ca13f62feabe93278985d",
"lessThan": "60142eb2afda34508e640a3ff2a54c90e51525cc",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "c3ac51701e925e8d50479ae2fddca51a09f636e8",
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"status": "affected"
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{
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"versionType": "git",
"status": "affected"
},
{
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"lessThan": "c27779d3679c695674747744390f97a5424a0dc8",
"versionType": "git",
"status": "affected"
},
{
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"lessThan": "7e0ad05ebc72fffba2bdf2400400902d94ed7272",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"programFiles": [
"drivers/net/wireless/ath/ath11k/mac.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "5.6",
"status": "affected"
},
{
"version": "0",
"lessThan": "5.6",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.10.273",
"lessThanOrEqual": "5.10.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "5.15.224",
"lessThanOrEqual": "5.15.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.1.191",
"lessThanOrEqual": "6.1.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.6.160",
"lessThanOrEqual": "6.6.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.12.113",
"lessThanOrEqual": "6.12.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.56",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.2.10",
"lessThanOrEqual": "7.2.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.3",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {},
"references": [
{
"url": "https://git.kernel.org/stable/c/302b622d5f3c9ef5efa36e41e69d278599265cfc",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5f814ca9a68fd12a51fe82c36a4a876f5b8329f1",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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{
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{
"url": "https://git.kernel.org/stable/c/a78f2d082f72e3c140c4542cade7f7f56f3cc62d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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{
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{
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"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}