CVE-2022-50880

Estado: AplazadaAlta (8.8)—

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().

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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

Detalles técnicos trazas, registros y código del informe original

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+0x265/0xb8a [ath10k_core]
[21713.799991]
[21713.799997] Use-after-free read at 0x00000000abe1c75e (in kfence-#69):
[21713.800010]  ath10k_sta_state+0x265/0xb8a [ath10k_core]
[21713.800041]  drv_sta_state+0x115/0x677 [mac80211]
[21713.800059]  __sta_info_destroy_part2+0xb1/0x133 [mac80211]
[21713.800076]  __sta_info_flush+0x11d/0x162 [mac80211]
[21713.800093]  ieee80211_set_disassoc+0x12d/0x2f4 [mac80211]
[21713.800110]  ieee80211_mgd_deauth+0x26c/0x29b [mac80211]
[21713.800137]  cfg80211_mlme_deauth+0x13f/0x1bb [cfg80211]
[21713.800153]  nl80211_deauthenticate+0xf8/0x121 [cfg80211]
[21713.800161]  genl_rcv_msg+0x38e/0x3be
[21713.800166]  netlink_rcv_skb+0x89/0xf7
[21713.800171]  genl_rcv+0x28/0x36
[21713.800176]  netlink_unicast+0x179/0x24b
[21713.800181]  netlink_sendmsg+0x3a0/0x40e
[21713.800187]  sock_sendmsg+0x72/0x76
[21713.800192]  ____sys_sendmsg+0x16d/0x1e3
[21713.800196]  ___sys_sendmsg+0x95/0xd1
[21713.800200]  __sys_sendmsg+0x85/0xbf
[21713.800205]  do_syscall_64+0x43/0x55
[21713.800210]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[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+0x7e/0x154 [ath10k_core]
[21713.800254]  ath10k_htt_t2h_msg_handler+0x586/0x1039 [ath10k_core]
[21713.800265]  ath10k_htt_htc_t2h_msg_handler+0x12/0x28 [ath10k_core]
[21713.800277]  ath10k_htc_rx_completion_handler+0x14c/0x1b5 [ath10k_core]
[21713.800283]  ath10k_pci_process_rx_cb+0x195/0x1d
---truncated---

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.32%
Percentil entre todas las CVEs puntuadas: 23
Fecha de la puntuación: 5/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement60 %

Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Network Segmentation Disable or Remove Feature or Program Application Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-50880",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "15604ab67179ae27ea3c7fb24b6df32b143257c4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "2d6259715c9597a6cfa25db8911683eb0073b1c6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "f12fc305c127bd07bb50373e29c6037696f916a8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "4494ec1c0bb850eaa80fed98e5b041d961011d3e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "08faf07717be0c88b02b5aa45aad2225dfcdd2dc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "54a3201f3c1ff813523937da78b5fa7649dbab71",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "2bf916418d2141b810c40812433ab4ecfd3c2934",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "38245f2d62cd4d1f38a763a7b4045ab4565b30a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d0eeafad118940fe445ca00f45be5624fea2ec34",
              "lessThan": "f020d9570a04df0762a2ac5c50cf1d8c511c9164",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/ath/ath10k/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": "4.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.9.331",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "status": "unaffected",
              "version": "4.14.296",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.262",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.150",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.75",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.17",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/ath/ath10k/mac.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-30T13:16:03.063",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08faf07717be0c88b02b5aa45aad2225dfcdd2dc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/15604ab67179ae27ea3c7fb24b6df32b143257c4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2bf916418d2141b810c40812433ab4ecfd3c2934",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2d6259715c9597a6cfa25db8911683eb0073b1c6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/38245f2d62cd4d1f38a763a7b4045ab4565b30a0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4494ec1c0bb850eaa80fed98e5b041d961011d3e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/54a3201f3c1ff813523937da78b5fa7649dbab71",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f020d9570a04df0762a2ac5c50cf1d8c511c9164",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f12fc305c127bd07bb50373e29c6037696f916a8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath10k: add peer map clean up for peer delete in ath10k_sta_state()\n\nWhen peer delete failed in a disconnect operation, use-after-free\ndetected by KFENCE in below log. It is because for each vdev_id and\naddress, it has only one struct ath10k_peer, it is allocated in\nath10k_peer_map_event(). When connected to an AP, it has more than\none HTT_T2H_MSG_TYPE_PEER_MAP reported from firmware, then the\narray peer_map of struct ath10k will be set muti-elements to the\nsame ath10k_peer in ath10k_peer_map_event(). When peer delete failed\nin ath10k_sta_state(), the ath10k_peer will be free for the 1st peer\nid in array peer_map of struct ath10k, and then use-after-free happened\nfor the 2nd peer id because they map to the same ath10k_peer.\n\nAnd clean up all peers in array peer_map for the ath10k_peer, then\nuser-after-free disappeared\n\npeer map event log:\n[  306.911021] wlan0: authenticate with b0:2a:43:e6:75:0e\n[  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\n[  306.957395] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 246\n[  306.957404] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 198\n[  306.986924] ath10k_pci 0000:01:00.0: htt peer map vdev 0 peer b0:2a:43:e6:75:0e id 166\n\npeer unmap event log:\n[  435.715691] wlan0: deauthenticating from b0:2a:43:e6:75:0e by local choice (Reason: 3=DEAUTH_LEAVING)\n[  435.716802] ath10k_pci 0000:01:00.0: mac vdev 0 peer delete b0:2a:43:e6:75:0e sta ffff990e0e9c2b50 (sta gone)\n[  435.717177] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 246\n[  435.717186] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 198\n[  435.717193] ath10k_pci 0000:01:00.0: htt peer unmap vdev 0 peer b0:2a:43:e6:75:0e id 166\n\nuse-after-free log:\n[21705.888627] wlan0: deauthenticating from d0:76:8f:82:be:75 by local choice (Reason: 3=DEAUTH_LEAVING)\n[21713.799910] ath10k_pci 0000:01:00.0: failed to delete peer d0:76:8f:82:be:75 for vdev 0: -110\n[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\n[21713.799968] ==================================================================\n[21713.799991] BUG: KFENCE: use-after-free read in ath10k_sta_state+0x265/0xb8a [ath10k_core]\n[21713.799991]\n[21713.799997] Use-after-free read at 0x00000000abe1c75e (in kfence-#69):\n[21713.800010]  ath10k_sta_state+0x265/0xb8a [ath10k_core]\n[21713.800041]  drv_sta_state+0x115/0x677 [mac80211]\n[21713.800059]  __sta_info_destroy_part2+0xb1/0x133 [mac80211]\n[21713.800076]  __sta_info_flush+0x11d/0x162 [mac80211]\n[21713.800093]  ieee80211_set_disassoc+0x12d/0x2f4 [mac80211]\n[21713.800110]  ieee80211_mgd_deauth+0x26c/0x29b [mac80211]\n[21713.800137]  cfg80211_mlme_deauth+0x13f/0x1bb [cfg80211]\n[21713.800153]  nl80211_deauthenticate+0xf8/0x121 [cfg80211]\n[21713.800161]  genl_rcv_msg+0x38e/0x3be\n[21713.800166]  netlink_rcv_skb+0x89/0xf7\n[21713.800171]  genl_rcv+0x28/0x36\n[21713.800176]  netlink_unicast+0x179/0x24b\n[21713.800181]  netlink_sendmsg+0x3a0/0x40e\n[21713.800187]  sock_sendmsg+0x72/0x76\n[21713.800192]  ____sys_sendmsg+0x16d/0x1e3\n[21713.800196]  ___sys_sendmsg+0x95/0xd1\n[21713.800200]  __sys_sendmsg+0x85/0xbf\n[21713.800205]  do_syscall_64+0x43/0x55\n[21713.800210]  entry_SYSCALL_64_after_hwframe+0x44/0xa9\n[21713.800213]\n[21713.800219] kfence-#69: 0x000000009149b0d5-0x000000004c0697fb, size=1064, cache=kmalloc-2k\n[21713.800219]\n[21713.800224] allocated by task 13 on cpu 0 at 21705.501373s:\n[21713.800241]  ath10k_peer_map_event+0x7e/0x154 [ath10k_core]\n[21713.800254]  ath10k_htt_t2h_msg_handler+0x586/0x1039 [ath10k_core]\n[21713.800265]  ath10k_htt_htc_t2h_msg_handler+0x12/0x28 [ath10k_core]\n[21713.800277]  ath10k_htc_rx_completion_handler+0x14c/0x1b5 [ath10k_core]\n[21713.800283]  ath10k_pci_process_rx_cb+0x195/0x1d\n---truncated---"
    }
  ],
  "lastModified": "2026-08-04T10:18:25.243",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}