{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  ALSA: caiaq: Decoupling ep1_in_urb in caiaq dev  The epq_in_urb object belonging to the caiaq device is coupled within the struct snd_usb_caiaqdev. After usb_submit_urb(epq_in_urb, GFP_KERNEL) executes successfully, epq_in_urb is successfully added to the urbp_list queue of the dummy HCD driver (userspace specifies dummy_hcd as the HCD layer driver for the caiaq USB device).  When init_card() calls snd_usb_caiaq_send_command() which subsequently fails due to a timeout, and proceeds to call snd_card_free() to release the card, the embedded ep1_in_urb object is also freed. When the dummy HCD driver detects that the URB has been unlinked, it returns the URB (by usb_hcd_giveback_urb()), which triggers [1].  Decouple the ep1_in_urb object from the struct snd_usb_caiaqdev and switch to using a pointer instead. Separately allocate and manage the memory for ep1_in_urb to prevent the release of the snd_card memory object from interfering with it.  midi_out_urb has the same issue as ep1_in_urb and is handled in the same way.  [1] BUG: KASAN: slab-use-after-free in usb_free_urb+0x24/0x120 drivers/usb/core/urb.c:96 Write of size 4 at addr ffff88803cee1050 by task ktimers/1/29 Call Trace:  usb_free_urb+0x24/0x120 drivers/usb/core/urb.c:96  dummy_timer+0xaac/0x4d50 drivers/usb/gadget/udc/dummy_hcd.c:2019  __run_hrtimer kernel/time/hrtimer.c:2067 [inline]  __hrtimer_run_queues+0x3eb/0xaf0 kernel/time/hrtimer.c:2124  hrtimer_run_softirq+0x1e1/0x2e0 kernel/time/hrtimer.c:2141  Allocated by task 36:  snd_card_new+0x7b/0x110 sound/core/init.c:184  create_card sound/usb/caiaq/device.c:429 [inline]  snd_probe+0x236/0x1af0 sound/usb/caiaq/device.c:544  Freed by task 36:  snd_card_free_when_closed sound/core/init.c:630 [inline]  snd_card_free+0x138/0x1d0 sound/core/init.c:662  snd_probe+0x162b/0x1af0 sound/usb/caiaq/device.c:553",
  "id": "DEBIAN-CVE-2026-98006",
  "modified": "2026-09-26T04:47:34.808860852Z",
  "published": "2026-09-25T11:17:28.847Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98006"
    }
  ],
  "upstream": [
    "CVE-2026-98006"
  ]
}