{"api_version":"1","generated_at":"2026-10-24T11:14:56+00:00","cve":"CVE-2026-98936","urls":{"html":"https://cve.report/CVE-2026-98936","api":"https://cve.report/api/cve/CVE-2026-98936.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98936","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98936"},"summary":{"title":"wifi: ath11k: reset ar->num_stations on hardware start","description":"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","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 13:17:14","updated_at":"2026-10-23 13:17:14"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c27779d3679c695674747744390f97a5424a0dc8","name":"https://git.kernel.org/stable/c/c27779d3679c695674747744390f97a5424a0dc8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c3ac51701e925e8d50479ae2fddca51a09f636e8","name":"https://git.kernel.org/stable/c/c3ac51701e925e8d50479ae2fddca51a09f636e8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9a9467f7cc633b31e4c34a2c56aa095e0c3fa853","name":"https://git.kernel.org/stable/c/9a9467f7cc633b31e4c34a2c56aa095e0c3fa853","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7e0ad05ebc72fffba2bdf2400400902d94ed7272","name":"https://git.kernel.org/stable/c/7e0ad05ebc72fffba2bdf2400400902d94ed7272","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/60142eb2afda34508e640a3ff2a54c90e51525cc","name":"https://git.kernel.org/stable/c/60142eb2afda34508e640a3ff2a54c90e51525cc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98936","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98936","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 60142eb2afda34508e640a3ff2a54c90e51525cc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d c3ac51701e925e8d50479ae2fddca51a09f636e8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 9a9467f7cc633b31e4c34a2c56aa095e0c3fa853 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d c27779d3679c695674747744390f97a5424a0dc8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5c65159f2895379e11ca13f62feabe93278985d 7e0ad05ebc72fffba2bdf2400400902d94ed7272 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.6","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.6 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"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","versions":[{"lessThan":"60142eb2afda34508e640a3ff2a54c90e51525cc","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"c3ac51701e925e8d50479ae2fddca51a09f636e8","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"9a9467f7cc633b31e4c34a2c56aa095e0c3fa853","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"c27779d3679c695674747744390f97a5424a0dc8","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"},{"lessThan":"7e0ad05ebc72fffba2bdf2400400902d94ed7272","status":"affected","version":"d5c65159f2895379e11ca13f62feabe93278985d","versionType":"git"}]},{"defaultStatus":"affected","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","versions":[{"status":"affected","version":"5.6"},{"lessThan":"5.6","status":"unaffected","version":"0","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":"6.6.160","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"5.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"5.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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"}],"providerMetadata":{"dateUpdated":"2026-10-23T12:11:48.632Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"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->num_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":"2026-10-23T12:11:48.632Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 13:17:14","lastModifiedDate":"2026-10-23 13:17:14","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98936","Ordinal":"1","Title":"wifi: ath11k: reset ar->num_stations on hardware start","CVE":"CVE-2026-98936","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98936","Ordinal":"1","NoteData":"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","Type":"Description","Title":"wifi: ath11k: reset ar->num_stations on hardware start"}]}}}