{
  "cveId": "CVE-2022-50880",
  "url": "https://patchblox.com/security/cve/CVE-2022-50880",
  "summary": "CVE-2022-50880 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-50880, released December 30, 2025. It is not reported as exploited. Patch Radar priority: High.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  wifi: ath10k: add peer map clean up for peer del...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()  When peer delete failed in a disconnect operation, use-after-free detected by KFENCE in below log. It is because for each vdev_id and address, it has only one struct ath10k_peer, it is allocated in ath10k_peer_map_event(). When connected to an AP, it has more than one HTT_T2H_MSG_TYPE_PEER_MAP reported from firmware, then the array peer_map of struct ath10k will be set muti-elements to the same ath10k_peer in ath10k_peer_map_event(). When peer delete failed in ath10k_sta_state(), the ath10k_peer will be free for the 1st peer id in array peer_map of struct ath10k, and then use-after-free happened for the 2nd peer id because they map to the same ath10k_peer.  And clean up all peers in array peer_map for the ath10k_peer, then user-after-free disappeared  peer map event log: [  306.911021] wlan0: authenticate with b0:2a:43:e6:75:0e [  306.957187] ath10k_pci 0000:01:00.0: mac vdev 0 peer create b0:2a:43:e6:75:0e (new sta) sta 1 / 32 peer 1 / 33 [  306.957395] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 246 [  306.957404] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 198 [  306.986924] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 166  peer unmap event log: [  435.715691] wlan0: deauthenticating from b0:2a:43:e6:75:0e by local choice (Reason: 3=DEAUTH_LEAVING) [  435.716802] ath10k_pci 0000:01:00.0: mac vdev 0 peer delete b0:2a:43:e6:75:0e sta ffff990e0e9c2b50 (sta gone) [  435.717177] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 246 [  435.717186] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 198 [  435.717193] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 166  use-after-free log: [21705.888627] wlan0: deauthenticating from d0:76:8f:82:be:75 by local choice (Reason: 3=DEAUTH_LEAVING) [21713.799910] ath10k_pci 0000:01:00.0: failed to delete peer d0:76:8f:82:be:75 for vdev 0: -110 [21713.799925] ath10k_pci 0000:01:00.0: found sta peer d0:76:8f:82:be:75 (ptr 0000000000000000 id 102) entry on vdev 0 after it was supposedly removed [21713.799968] ================================================================== [21713.799991] BUG: KFENCE: use-after-free read in ath10k_sta_state\u002B0x265/0xb8a [ath10k_core] [21713.799991] [21713.799997] Use-after-free read at 0x00000000abe1c75e (in kfence-#69): [21713.800010]  ath10k_sta_state\u002B0x265/0xb8a [ath10k_core] [21713.800041]  drv_sta_state\u002B0x115/0x677 [mac80211] [21713.800059]  __sta_info_destroy_part2\u002B0xb1/0x133 [mac80211] [21713.800076]  __sta_info_flush\u002B0x11d/0x162 [mac80211] [21713.800093]  ieee80211_set_disassoc\u002B0x12d/0x2f4 [mac80211] [21713.800110]  ieee80211_mgd_deauth\u002B0x26c/0x29b [mac80211] [21713.800137]  cfg80211_mlme_deauth\u002B0x13f/0x1bb [cfg80211] [21713.800153]  nl80211_deauthenticate\u002B0xf8/0x121 [cfg80211] [21713.800161]  genl_rcv_msg\u002B0x38e/0x3be [21713.800166]  netlink_rcv_skb\u002B0x89/0xf7 [21713.800171]  genl_rcv\u002B0x28/0x36 [21713.800176]  netlink_unicast\u002B0x179/0x24b [21713.800181]  netlink_sendmsg\u002B0x3a0/0x40e [21713.800187]  sock_sendmsg\u002B0x72/0x76 [21713.800192]  ____sys_sendmsg\u002B0x16d/0x1e3 [21713.800196]  ___sys_sendmsg\u002B0x95/0xd1 [21713.800200]  __sys_sendmsg\u002B0x85/0xbf [21713.800205]  do_syscall_64\u002B0x43/0x55 [21713.800210]  entry_SYSCALL_64_after_hwframe\u002B0x44/0xa9 [21713.800213] [21713.800219] kfence-#69: 0x000000009149b0d5-0x000000004c0697fb, size=1064, cache=kmalloc-2k [21713.800219] [21713.800224] allocated by task 13 on cpu 0 at 21705.501373s: [21713.800241]  ath10k_peer_map_event\u002B0x7e/0x154 [ath10k_core] [21713.800254]  ath10k_htt_t2h_msg_handler\u002B0x586/0x1039 [ath10k_core] [21713.800265]  ath10k_htt_htc_t2h_msg_handler\u002B0x12/0x28 [ath10k_core] [21713.800277]  ath10k_htc_rx_completion_handler\u002B0x14c/0x1b5 [ath10k_core] [21713.800283]  ath10k_pci_process_rx_cb\u002B0x195/0x1d ---truncated---",
  "published": "2025-12-30T13:16:03Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00321,
  "epssPercentile": 0.25227,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50880",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50880",
      "released": "2025-12-30T13:16:03Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50880",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50880",
      "released": "2025-12-30T13:16:03Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.0.3-1",
      "fix": "DEBIAN-CVE-2022-50880",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2022-50880",
      "released": "2025-12-30T13:16:03Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}