{
  "cveId": "CVE-2026-63805",
  "url": "https://patchblox.com/security/cve/CVE-2026-63805",
  "summary": "CVE-2026-63805 is fixed in linux on 1 platform by DEBIAN-CVE-2026-63805 (version 7.1.3-1), released July 20, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "crypto: nx - fix nx_crypto_ctx_exit argument",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  crypto: nx - fix nx_crypto_ctx_exit argument  nx_crypto_ctx_shash_exit calls nx_crypto_ctx_exit with crypto_shash_ctx(...) but crypto_shash_ctx gives a nx_crypto_ctx *, not a crypto_tfm *.  Fix the type in nx_crypto_ctx_exit and drop the bogus crypto_tfm_ctx call.  This fixes the following oops:    BUG: Unable to handle kernel data access at 0xc0403effffffffc8   Faulting instruction address: 0xc000000000396cb4   Oops: Kernel access of bad area, sig: 11 [#15]   Call Trace:    nx_crypto_ctx_shash_exit\u002B0x24/0x60    crypto_shash_exit_tfm\u002B0x28/0x40    crypto_destroy_tfm\u002B0x98/0x140    crypto_exit_ahash_using_shash\u002B0x20/0x40    crypto_destroy_tfm\u002B0x98/0x140    hash_release\u002B0x1c/0x30    alg_sock_destruct\u002B0x38/0x60    __sk_destruct\u002B0x48/0x2b0    af_alg_release\u002B0x58/0xb0    __sock_release\u002B0x68/0x150    sock_close\u002B0x20/0x40    __fput\u002B0x110/0x3a0    sys_close\u002B0x48/0xa0    system_call_exception\u002B0x140/0x2d0    system_call_common\u002B0xf4/0x258  .. which came from hardlink(1) opportunistically using AF_ALG.  The same problem exists with nx_crypto_ctx_skcipher_exit getting a context it wasn\u0027t expecting, but apparently nobody hit that for years.",
  "published": "2026-07-19T12:16:53Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00134,
  "epssPercentile": 0.02955,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-63805",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.3-1",
      "fix": "DEBIAN-CVE-2026-63805",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-63805",
      "released": "2026-07-20T12:58:36Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}