CVE-2026-98334 (GCVE-0-2026-98334)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46
VLAI
Title
wifi: mac80211: reset state when starting AP fails
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: reset state when starting AP fails ieee80211_start_ap() can set enable_beacon (and beacon_int) and fail later, leaving it set forever. Scanning can then attempt to restore beaconing on such an interface, leading to: Oops: divide error: 0000 [#1] SMP KASAN NOPTI RIP: 0010:mac80211_hwsim_link_info_changed+0xca7/0xf00 Call Trace: drv_link_info_changed+0x413/0x860 net/mac80211/driver-ops.c:495 ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427 ieee80211_offchannel_return+0x381/0x580 net/mac80211/offchannel.c:160 __ieee80211_scan_completed+0x993/0xe30 net/mac80211/scan.c:519 ieee80211_scan_work+0x472/0x2010 net/mac80211/scan.c:1193 cfg80211_wiphy_work+0x2b7/0x550 net/wireless/core.c:538 in hwsim. Also, cfg80211 then allows changing the interface type, and the off-channel path getgs confused about beaconing as well, leading to another warning: WARNING: net/mac80211/driver-ops.c:468 at drv_link_info_changed+0x583/0x880 ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427 ieee80211_offchannel_stop_vifs+0x328/0x5c0 net/mac80211/offchannel.c:122 ieee80211_start_sw_scan net/mac80211/scan.c:583 [inline] __ieee80211_start_scan+0xfb6/0x1af0 net/mac80211/scan.c:882 Reset the state on failures to always have it correct.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6667 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: d6a83228823fc0cc8d79d95c9f0bf568b7317862 , < d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32 (git)
Affected: d6a83228823fc0cc8d79d95c9f0bf568b7317862 , < 5d5ff5b36f5748a2a077f875a73ccb26860d3fcc (git)
Affected: d6a83228823fc0cc8d79d95c9f0bf568b7317862 , < 6eac225f59c1c2277ac74f8a716d6df0ba3b8d28 (git)
Affected: d6a83228823fc0cc8d79d95c9f0bf568b7317862 , < 3f28551d0241254a75626d868041c6340285088b (git)
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Linux Linux Affected: 3.9
Unaffected: 0 , < 3.9 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.54 , ≤ 6.18.* (semver)
Unaffected: 7.2.8 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mac80211/cfg.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset state when starting AP fails\n\nieee80211_start_ap() can set enable_beacon (and beacon_int) and fail\nlater, leaving it set forever. Scanning can then attempt to restore\nbeaconing on such an interface, leading to:\n\n  Oops: divide error: 0000 [#1] SMP KASAN NOPTI\n  RIP: 0010:mac80211_hwsim_link_info_changed+0xca7/0xf00\n  Call Trace:\n   drv_link_info_changed+0x413/0x860 net/mac80211/driver-ops.c:495\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_return+0x381/0x580 net/mac80211/offchannel.c:160\n   __ieee80211_scan_completed+0x993/0xe30 net/mac80211/scan.c:519\n   ieee80211_scan_work+0x472/0x2010 net/mac80211/scan.c:1193\n   cfg80211_wiphy_work+0x2b7/0x550 net/wireless/core.c:538\n\nin hwsim. Also, cfg80211 then allows changing the interface type,\nand the off-channel path getgs confused about beaconing as well,\nleading to another warning:\n\n  WARNING: net/mac80211/driver-ops.c:468 at drv_link_info_changed+0x583/0x880\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_stop_vifs+0x328/0x5c0 net/mac80211/offchannel.c:122\n   ieee80211_start_sw_scan net/mac80211/scan.c:583 [inline]\n   __ieee80211_start_scan+0xfb6/0x1af0 net/mac80211/scan.c:882\n\nReset the state on failures to always have it correct."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:46:25.992Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/d83da43e9b3b3b1bad99ac5a1065f1c63ad5fc32"
        },
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          "url": "https://git.kernel.org/stable/c/5d5ff5b36f5748a2a077f875a73ccb26860d3fcc"
        },
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          "url": "https://git.kernel.org/stable/c/6eac225f59c1c2277ac74f8a716d6df0ba3b8d28"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f28551d0241254a75626d868041c6340285088b"
        }
      ],
      "title": "wifi: mac80211: reset state when starting AP fails",
      "x_generator": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98334",
    "datePublished": "2026-10-06T08:46:25.992Z",
    "dateReserved": "2026-09-25T10:25:14.341Z",
    "dateUpdated": "2026-10-06T08:46:25.992Z",
    "state": "PUBLISHED"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset state when starting AP fails\n\nieee80211_start_ap() can set enable_beacon (and beacon_int) and fail\nlater, leaving it set forever. Scanning can then attempt to restore\nbeaconing on such an interface, leading to:\n\n  Oops: divide error: 0000 [#1] SMP KASAN NOPTI\n  RIP: 0010:mac80211_hwsim_link_info_changed+0xca7/0xf00\n  Call Trace:\n   drv_link_info_changed+0x413/0x860 net/mac80211/driver-ops.c:495\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_return+0x381/0x580 net/mac80211/offchannel.c:160\n   __ieee80211_scan_completed+0x993/0xe30 net/mac80211/scan.c:519\n   ieee80211_scan_work+0x472/0x2010 net/mac80211/scan.c:1193\n   cfg80211_wiphy_work+0x2b7/0x550 net/wireless/core.c:538\n\nin hwsim. Also, cfg80211 then allows changing the interface type,\nand the off-channel path getgs confused about beaconing as well,\nleading to another warning:\n\n  WARNING: net/mac80211/driver-ops.c:468 at drv_link_info_changed+0x583/0x880\n   ieee80211_link_info_change_notify+0x24b/0x3c0 net/mac80211/main.c:427\n   ieee80211_offchannel_stop_vifs+0x328/0x5c0 net/mac80211/offchannel.c:122\n   ieee80211_start_sw_scan net/mac80211/scan.c:583 [inline]\n   __ieee80211_start_scan+0xfb6/0x1af0 net/mac80211/scan.c:882\n\nReset the state on failures to always have it correct."
          }
        ],
        "id": "CVE-2026-98334",
        "lastModified": "2026-10-06T09:18:25.903",
        "metrics": {},
        "published": "2026-10-06T09:18:25.903",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-10T10:11:59+00:00",
      "cve": "CVE-2026-98334",
      "id": "CVE-2026-98334",
      "initial_release_date": "2026-10-06T00:00:00+00:00",
      "product_status:known_affected": "277",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: wifi: mac80211: reset state when starting AP fails",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98334.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-07T00:00:35Z",
      "cve": "CVE-2026-98334",
      "id": "CVE-2026-98334",
      "initial_release_date": "2026-10-07T00:00:35Z",
      "product_status:known_affected": "265",
      "product_status:known_not_affected": "82",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-98334",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-98334.json",
      "version": "2"
    }
  }
}



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