crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare()

{
  "id": "645a2bef65d0c3ad132dd1f333984b574798e0fa8ace39b71b0d5bfb68218891",
  "url": "https://osv.dev/vulnerability/CVE-2025-38300",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: crypto: sun8i-ce-cipher - fix error handling in sun8i_ce_cipher_prepare() Fix two DMA cleanup issues on the error path in sun8i_ce_cipher_prepare(): 1] If dma_map_sg() fails for areq->dst, the device driver would try to free DMA memory it has not allocated in the first place. To fix this, on the \"theend_sgs\" error path, call dma unmap only if the corresponding dma map was successful. 2] If the dma_map_single() call for the IV fails, the device driver would try to free an invalid DMA memory address on the \"theend_iv\" path: ------------[ cut here ]------------ DMA-API: sun8i-ce 1904000.crypto: device driver tries to free an invalid DMA memory address WARNING: CPU: 2 PID: 69 at kernel/dma/debug.c:968 check_unmap+0x123c/0x1b90 Modules linked in: skcipher_example(O+) CPU: 2 UID: 0 PID: 69 Comm: 1904000.crypto- Tainted: G O 6.15.0-rc3+ #24 PREEMPT Tainted: [O]=OOT_MODULE Hardware name: OrangePi Zero2 (DT) pc : check_unmap+0x123c/0x1b90 lr : check_unmap+0x123c/0x1b90 ... Call trace: check_unmap+0x123c/0x1b90 (P) debug_dma_unmap_page+0xac/0xc0 dma_unmap_page_attrs+0x1f4/0x5fc sun8i_ce_cipher_do_one+0x1bd4/0x1f40 crypto_pump_work+0x334/0x6e0 kthread_worker_fn+0x21c/0x438 kthread+0x374/0x664 ret_from_fork+0x10/0x20 ---[ end trace 0000000000000000 ]--- To fix this, check for !dma_mapping_error() before calling dma_unmap_single() on the \"theend_iv\" path.",
    "evidence": "osv:CVE-2025-38300",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.142",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.94",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.34",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.15.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38300",
      "aliases": [
        "CVE-2025-38300"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "06f751b613296cc34b86fc83fccaf30d646eb8bc"
                },
                {
                  "fixed": "a0ac3f85b2e3ef529e852f252a70311f9029d5e6"
                },
                {
                  "fixed": "c62b79c1c51303dbcb6edfa4de0ee176f4934c52"
                },
                {
                  "fixed": "19d267d9fad00d94ad8477899e38ed7c11f33fb6"
                },
                {
                  "fixed": "4051250e5db489f8ad65fc337e2677b9b568ac72"
                },
                {
                  "fixed": "f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38300.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.5.0"
                },
                {
                  "fixed": "6.1.142"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.94"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.34"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.15.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38300.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.573150481Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/19d267d9fad00d94ad8477899e38ed7c11f33fb6",
        "https://git.kernel.org/stable/c/4051250e5db489f8ad65fc337e2677b9b568ac72",
        "https://git.kernel.org/stable/c/a0ac3f85b2e3ef529e852f252a70311f9029d5e6",
        "https://git.kernel.org/stable/c/c62b79c1c51303dbcb6edfa4de0ee176f4934c52",
        "https://git.kernel.org/stable/c/f31adc3e356f7350d4a4d68c98d3f60f2f6e26b3",
        "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38300.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38300",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38300.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38300",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 500308,
  "published_at": "2025-07-10T07:42:12.826+00:00"
}