FKIE_CVE-2023-53822

Vulnerability from fkie_nvd - Published: 2025-12-09 16:17 - Updated: 2025-12-09 18:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: Ignore frags from uninitialized peer in dp. When max virtual ap interfaces are configured in all the bands with ACS and hostapd restart is done every 60s, a crash is observed at random times. In this certain scenario, a fragmented packet is received for self peer, for which rx_tid and rx_frags are not initialized in datapath. While handling this fragment, crash is observed as the rx_frag list is uninitialised and when we walk in ath11k_dp_rx_h_sort_frags, skb null leads to exception. To address this, before processing received fragments we check dp_setup_done flag is set to ensure that peer has completed its dp peer setup for fragment queue, else ignore processing the fragments. Call trace: ath11k_dp_process_rx_err+0x550/0x1084 [ath11k] ath11k_dp_service_srng+0x70/0x370 [ath11k] 0xffffffc009693a04 __napi_poll+0x30/0xa4 net_rx_action+0x118/0x270 __do_softirq+0x10c/0x244 irq_exit+0x64/0xb4 __handle_domain_irq+0x88/0xac gic_handle_irq+0x74/0xbc el1_irq+0xf0/0x1c0 arch_cpu_idle+0x10/0x18 do_idle+0x104/0x248 cpu_startup_entry+0x20/0x64 rest_init+0xd0/0xdc arch_call_rest_init+0xc/0x14 start_kernel+0x480/0x4b8 Code: f9400281 f94066a2 91405021 b94a0023 (f9406401) Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/41efc47f5bc53e63461579e206adc17c4452ab6e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e78526a06b53718bfc1dfff37864c7760e41f8ec
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath11k: Ignore frags from uninitialized peer in dp.\n\nWhen max virtual ap interfaces are configured in all the bands with\nACS and hostapd restart is done every 60s, a crash is observed at\nrandom times.\nIn this certain scenario, a fragmented packet is received for\nself peer, for which rx_tid and rx_frags are not initialized in\ndatapath. While handling this fragment, crash is observed as the\nrx_frag list is uninitialised and when we walk in\nath11k_dp_rx_h_sort_frags, skb null leads to exception.\n\nTo address this, before processing received fragments we check\ndp_setup_done flag is set to ensure that peer has completed its\ndp peer setup for fragment queue, else ignore processing the\nfragments.\n\nCall trace:\n  ath11k_dp_process_rx_err+0x550/0x1084 [ath11k]\n  ath11k_dp_service_srng+0x70/0x370 [ath11k]\n  0xffffffc009693a04\n  __napi_poll+0x30/0xa4\n  net_rx_action+0x118/0x270\n  __do_softirq+0x10c/0x244\n  irq_exit+0x64/0xb4\n  __handle_domain_irq+0x88/0xac\n  gic_handle_irq+0x74/0xbc\n  el1_irq+0xf0/0x1c0\n  arch_cpu_idle+0x10/0x18\n  do_idle+0x104/0x248\n  cpu_startup_entry+0x20/0x64\n  rest_init+0xd0/0xdc\n  arch_call_rest_init+0xc/0x14\n  start_kernel+0x480/0x4b8\n  Code: f9400281 f94066a2 91405021 b94a0023 (f9406401)\n\nTested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.7.0.1-01744-QCAHKSWPL_SILICONZ-1"
    }
  ],
  "id": "CVE-2023-53822",
  "lastModified": "2025-12-09T18:37:13.640",
  "metrics": {},
  "published": "2025-12-09T16:17:20.993",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/41efc47f5bc53e63461579e206adc17c4452ab6e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e78526a06b53718bfc1dfff37864c7760e41f8ec"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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