wifi: ath11k: reset ar->num_stations on hardware start
Summary
| CVE | CVE-2026-98936 |
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| State | PUBLISHED |
|---|
| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-10-23 13:17:14 UTC |
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| Updated | 2026-10-23 13:17:14 UTC |
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| 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 |
|---|
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected d5c65159f2895379e11ca13f62feabe93278985d 60142eb2afda34508e640a3ff2a54c90e51525cc git |
Not specified |
| CNA |
Linux |
Linux |
affected d5c65159f2895379e11ca13f62feabe93278985d c3ac51701e925e8d50479ae2fddca51a09f636e8 git |
Not specified |
| CNA |
Linux |
Linux |
affected d5c65159f2895379e11ca13f62feabe93278985d 9a9467f7cc633b31e4c34a2c56aa095e0c3fa853 git |
Not specified |
| CNA |
Linux |
Linux |
affected d5c65159f2895379e11ca13f62feabe93278985d c27779d3679c695674747744390f97a5424a0dc8 git |
Not specified |
| CNA |
Linux |
Linux |
affected d5c65159f2895379e11ca13f62feabe93278985d 7e0ad05ebc72fffba2bdf2400400902d94ed7272 git |
Not specified |
| CNA |
Linux |
Linux |
affected 5.6 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.6 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.160 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.113 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.56 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.2.10 7.2.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.3 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/c27779d3679c695674747744390f97a5424a0dc8 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/c3ac51701e925e8d50479ae2fddca51a09f636e8 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/9a9467f7cc633b31e4c34a2c56aa095e0c3fa853 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/7e0ad05ebc72fffba2bdf2400400902d94ed7272 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/60142eb2afda34508e640a3ff2a54c90e51525cc |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.