{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9"
            },
            {
              "fixed": "57b47231055b431ed0a1a55f33cac32981564405"
            },
            {
              "fixed": "cc2da381875d4a67026e4c8feb3dba51a2a2d1bc"
            },
            {
              "fixed": "8fcefe840fa8c14ce667768e5b043286ac3bbcbe"
            },
            {
              "fixed": "8ef183216feaa24b66b940510d8b68f680eb56e9"
            },
            {
              "fixed": "7164b3953cefd540e7ebca828c793bc6869cfbc4"
            },
            {
              "fixed": "b46aa129fa2807bfe1545fe74d9295d53c51520b"
            },
            {
              "fixed": "3e298897f41c61450c2e7a4f457e8b2485eb35b3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53046.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix use-after-free from async crypto on Qualcomm crypto engine\n\nksmbd_crypt_message() sets a NULL completion callback on AEAD requests\nand does not handle the -EINPROGRESS return code from async hardware\ncrypto engines like the Qualcomm Crypto Engine (QCE). When QCE returns\n-EINPROGRESS, ksmbd treats it as an error and immediately frees the\nrequest while the hardware DMA operation is still in flight. The DMA\ncompletion callback then dereferences freed memory, causing a NULL\npointer crash:\n\n  pc : qce_skcipher_done+0x24/0x174\n  lr : vchan_complete+0x230/0x27c\n  ...\n  el1h_64_irq+0x68/0x6c\n  ksmbd_free_work_struct+0x20/0x118 [ksmbd]\n  ksmbd_exit_file_cache+0x694/0xa4c [ksmbd]\n\nUse the standard crypto_wait_req() pattern with crypto_req_done() as\nthe completion callback, matching the approach used by the SMB client\nin fs/smb/client/smb2ops.c. This properly handles both synchronous\nengines (immediate return) and async engines (-EINPROGRESS followed\nby callback notification).",
  "id": "CVE-2026-53046",
  "modified": "2026-08-12T03:51:08.594002580Z",
  "published": "2026-06-24T16:29:52.676Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e298897f41c61450c2e7a4f457e8b2485eb35b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/57b47231055b431ed0a1a55f33cac32981564405"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7164b3953cefd540e7ebca828c793bc6869cfbc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ef183216feaa24b66b940510d8b68f680eb56e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8fcefe840fa8c14ce667768e5b043286ac3bbcbe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b46aa129fa2807bfe1545fe74d9295d53c51520b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cc2da381875d4a67026e4c8feb3dba51a2a2d1bc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53046.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53046"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ksmbd: fix use-after-free from async crypto on Qualcomm crypto engine"
}