{
  "cveId": "CVE-2026-53046",
  "url": "https://patchblox.com/security/cve/CVE-2026-53046",
  "summary": "CVE-2026-53046 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-53046, released June 25, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine  ksmbd_crypt_message() sets a NULL completion callback on AEAD requests and does not handle the -EINPROGRESS return code from async hardware crypto engines like the Qualcomm Crypto Engine (QCE). When QCE returns -EINPROGRESS, ksmbd treats it as an error and immediately frees the request while the hardware DMA operation is still in flight. The DMA completion callback then dereferences freed memory, causing a NULL pointer crash:    pc : qce_skcipher_done\u002B0x24/0x174   lr : vchan_complete\u002B0x230/0x27c   ...   el1h_64_irq\u002B0x68/0x6c   ksmbd_free_work_struct\u002B0x20/0x118 [ksmbd]   ksmbd_exit_file_cache\u002B0x694/0xa4c [ksmbd]  Use the standard crypto_wait_req() pattern with crypto_req_done() as the completion callback, matching the approach used by the SMB client in fs/smb/client/smb2ops.c. This properly handles both synchronous engines (immediate return) and async engines (-EINPROGRESS followed by callback notification).",
  "published": "2026-06-24T17:17:16Z",
  "severity": "Moderate",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00717,
  "epssPercentile": 0.54074,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53046",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.176-1",
      "fix": "DEBIAN-CVE-2026-53046",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53046",
      "released": "2026-06-25T17:23:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.94-1",
      "fix": "DEBIAN-CVE-2026-53046",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53046",
      "released": "2026-06-25T17:23:13Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.0.10-1",
      "fix": "DEBIAN-CVE-2026-53046",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-53046",
      "released": "2026-06-25T17:23:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}