{"id":"CVE-2023-53822","title":"wifi: ath11k: Ignore frags from uninitialized peer in dp.","summary":"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…","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","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= d5c65159f2895379e11ca13f62feabe93278985d < e78526a06b53718bfc1dfff37864c7760e41f8ec","Linux >= d5c65159f2895379e11ca13f62feabe93278985d < 41efc47f5bc53e63461579e206adc17c4452ab6e","Linux >= d5c65159f2895379e11ca13f62feabe93278985d < a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6","Linux 5.6"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T21:37:27.622518Z"},"published":"2025-12-09","updated":"2026-10-15","sourceUpdated":"2026-10-15T21:41:36.712Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53822","references":[{"url":"https://git.kernel.org/stable/c/e78526a06b53718bfc1dfff37864c7760e41f8ec"},{"url":"https://git.kernel.org/stable/c/41efc47f5bc53e63461579e206adc17c4452ab6e"},{"url":"https://git.kernel.org/stable/c/a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6"}],"tags":["cve.org"],"epss":0.00356,"epssPercentile":0.27645,"ingestedAt":"2026-10-15T22:48:25.422Z","slug":"CVE-2023-53822","body":"## Overview\n\nIn 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\n\n## Affected\n\n- `Linux >= d5c65159f2895379e11ca13f62feabe93278985d < e78526a06b53718bfc1dfff37864c7760e41f8ec`\n- `Linux >= d5c65159f2895379e11ca13f62feabe93278985d < 41efc47f5bc53e63461579e206adc17c4452ab6e`\n- `Linux >= d5c65159f2895379e11ca13f62feabe93278985d < a06bfb3c9f69f303692cdae87bc0899d2ae8b2a6`\n- `Linux 5.6`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}