CVE-2026-98936 (GCVE-0-2026-98936)
Vulnerability from cvelistv5
Published
2026-10-23 12:11
Modified
2026-10-30 12:40
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d Version: d5c65159f2895379e11ca13f62feabe93278985d |
||
{
"containers": {
"cna": {
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{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/net/wireless/ath/ath11k/mac.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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"versionType": "git"
},
{
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},
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{
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "5.6"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.273",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.224",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.191",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.2.*",
"status": "unaffected",
"version": "7.2.10",
"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": "5.10.273",
"versionStartIncluding": "5.6",
"vulnerable": true
},
{
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{
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: reset ar-\u003enum_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\u0027num_stations\u0027 in \u0027struct ath11k\u0027 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\u0027s 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"
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T12:40:25.994Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/302b622d5f3c9ef5efa36e41e69d278599265cfc"
},
{
"url": "https://git.kernel.org/stable/c/5f814ca9a68fd12a51fe82c36a4a876f5b8329f1"
},
{
"url": "https://git.kernel.org/stable/c/a78f2d082f72e3c140c4542cade7f7f56f3cc62d"
},
{
"url": "https://git.kernel.org/stable/c/60142eb2afda34508e640a3ff2a54c90e51525cc"
},
{
"url": "https://git.kernel.org/stable/c/c3ac51701e925e8d50479ae2fddca51a09f636e8"
},
{
"url": "https://git.kernel.org/stable/c/9a9467f7cc633b31e4c34a2c56aa095e0c3fa853"
},
{
"url": "https://git.kernel.org/stable/c/c27779d3679c695674747744390f97a5424a0dc8"
},
{
"url": "https://git.kernel.org/stable/c/7e0ad05ebc72fffba2bdf2400400902d94ed7272"
}
],
"title": "wifi: ath11k: reset ar-\u003enum_stations on hardware start",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-98936",
"datePublished": "2026-10-23T12:11:48.632Z",
"dateReserved": "2026-09-25T10:25:14.381Z",
"dateUpdated": "2026-10-30T12:40:25.994Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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