{
  "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"
            },
            {
              "fixed": "7.2.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: RFCOMM: validate skb length in rfcomm_recv_frame  rfcomm_recv_frame() casts skb-\u003edata to struct rfcomm_hdr and dereferences hdr-\u003eaddr and hdr-\u003ectrl without validating skb-\u003elen first. A truncated frame with skb-\u003elen less than the minimum header size causes an out-of-bounds read of uninitialized memory. Additionally, a zero-length frame causes skb-\u003elen-- to underflow to UINT_MAX, making skb_tail_pointer() read far past the buffer.  Commit 23882b828c3c (\"Bluetooth: RFCOMM: validate skb length in MCC handlers\") fixed the same class of missing-length-check bugs in the MCC sub-handlers, but the top-level rfcomm_recv_frame() was left unfixed. KMSAN reports:    BUG: KMSAN: uninit-value in rfcomm_run   ...   Uninit was created at:     __alloc_skb+0x474/0xb60     vhci_write+0xe9/0x870  Fix this by rejecting frames smaller than sizeof(struct rfcomm_hdr) + 1 (the minimum frame must have a 3-byte header and a 1-byte FCS).",
  "id": "DEBIAN-CVE-2026-93783",
  "modified": "2026-09-26T08:47:36.105977780Z",
  "published": "2026-09-24T17:17:10.907Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-93783"
    }
  ],
  "upstream": [
    "CVE-2026-93783"
  ]
}