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wifi: ath11k: reset ar->num_stations on hardware start

Type: advisorySource: Official CVE List1 source record

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

Announced Source revision 1
Original source ↗

CVE-2026-98936

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-98936

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "d5c65159f2895379e11ca13f62feabe93278985d",
        "lessThan": "60142eb2afda34508e640a3ff2a54c90e51525cc",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d5c65159f2895379e11ca13f62feabe93278985d",
        "lessThan": "c3ac51701e925e8d50479ae2fddca51a09f636e8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d5c65159f2895379e11ca13f62feabe93278985d",
        "lessThan": "9a9467f7cc633b31e4c34a2c56aa095e0c3fa853",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d5c65159f2895379e11ca13f62feabe93278985d",
        "lessThan": "c27779d3679c695674747744390f97a5424a0dc8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "d5c65159f2895379e11ca13f62feabe93278985d",
        "lessThan": "7e0ad05ebc72fffba2bdf2400400902d94ed7272",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/ath/ath11k/mac.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.6"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.6",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.6.160",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.113",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.56",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.10",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/ath/ath11k/mac.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98936

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#52794 · Revision 1
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