{
  "threat_severity" : "Moderate",
  "public_date" : "2025-10-22T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: wifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()",
    "id" : "2405741",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2405741"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-787",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nwifi: ath9k: Fix potential stack-out-of-bounds write in ath9k_wmi_rsp_callback()\nFix a stack-out-of-bounds write that occurs in a WMI response callback\nfunction that is called after a timeout occurs in ath9k_wmi_cmd().\nThe callback writes to wmi->cmd_rsp_buf, a stack-allocated buffer that\ncould no longer be valid when a timeout occurs. Set wmi->last_seq_id to\n0 when a timeout occurred.\nFound by a modified version of syzkaller.\nBUG: KASAN: stack-out-of-bounds in ath9k_wmi_ctrl_rx\nWrite of size 4\nCall Trace:\nmemcpy\nath9k_wmi_ctrl_rx\nath9k_htc_rx_msg\nath9k_hif_usb_reg_in_cb\n__usb_hcd_giveback_urb\nusb_hcd_giveback_urb\ndummy_timer\ncall_timer_fn\nrun_timer_softirq\n__do_softirq\nirq_exit_rcu\nsysvec_apic_timer_interrupt" ],
  "statement" : "ath9k_wmi_cmd() could time out while a late WMI response still arrived and wrote into wmi->cmd_rsp_buf, which was a stack buffer no longer valid, causing a stack out-of-bounds write. The patch sets wmi->last_seq_id = 0 on timeout so late responses are discarded, preventing the write to a stale stack buffer. Primary impact is availability (kernel crash), with potential memory corruption in worst case.\nTriggering this issue typically requires local access with a connected AR9271 or ath9k_htc USB Wi-Fi dongle, along with the ability to induce command timeouts within the driver.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-11-14T00:00:00Z",
    "advisory" : "RHSA-2023:7077",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-513.5.1.el8_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-11-07T00:00:00Z",
    "advisory" : "RHSA-2023:6583",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-362.8.1.el9_3"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-53717\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53717\nhttps://lore.kernel.org/linux-cve-announce/2025102214-CVE-2023-53717-e88c@gregkh/T" ],
  "name" : "CVE-2023-53717",
  "mitigation" : {
    "value" : "To mitigate this issue, prevent module ath9k_hw from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
    "lang" : "en:us"
  },
  "csaw" : false
}