{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "bfd9efddf990d152dc9912fdca520c5e1e19e1e2"
            },
            {
              "fixed": "8d8507a457667f23477a15496b91908a5b5b7cf3"
            },
            {
              "fixed": "833033e6e55acf11304ff7bbbdf18351d139c281"
            },
            {
              "fixed": "4e67f504ee9ded15e256b64f4fde150e917381d7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "6.18.38"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63805.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: nx - fix nx_crypto_ctx_exit argument\n\nnx_crypto_ctx_shash_exit calls nx_crypto_ctx_exit with crypto_shash_ctx(...)\nbut crypto_shash_ctx gives a nx_crypto_ctx *, not a crypto_tfm *.\n\nFix the type in nx_crypto_ctx_exit and drop the bogus crypto_tfm_ctx\ncall.\n\nThis fixes the following oops:\n\n  BUG: Unable to handle kernel data access at 0xc0403effffffffc8\n  Faulting instruction address: 0xc000000000396cb4\n  Oops: Kernel access of bad area, sig: 11 [#15]\n  Call Trace:\n   nx_crypto_ctx_shash_exit+0x24/0x60\n   crypto_shash_exit_tfm+0x28/0x40\n   crypto_destroy_tfm+0x98/0x140\n   crypto_exit_ahash_using_shash+0x20/0x40\n   crypto_destroy_tfm+0x98/0x140\n   hash_release+0x1c/0x30\n   alg_sock_destruct+0x38/0x60\n   __sk_destruct+0x48/0x2b0\n   af_alg_release+0x58/0xb0\n   __sock_release+0x68/0x150\n   sock_close+0x20/0x40\n   __fput+0x110/0x3a0\n   sys_close+0x48/0xa0\n   system_call_exception+0x140/0x2d0\n   system_call_common+0xf4/0x258\n\n.. which came from hardlink(1) opportunistically using AF_ALG.\n\nThe same problem exists with nx_crypto_ctx_skcipher_exit getting a context\nit wasn't expecting, but apparently nobody hit that for years.",
  "id": "CVE-2026-63805",
  "modified": "2026-07-22T05:30:07.563717985Z",
  "published": "2026-07-19T12:02:09.669Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e67f504ee9ded15e256b64f4fde150e917381d7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/833033e6e55acf11304ff7bbbdf18351d139c281"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d8507a457667f23477a15496b91908a5b5b7cf3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63805.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63805"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "crypto: nx - fix nx_crypto_ctx_exit argument"
}