zram: validate deflate params

{
  "id": "f35f035edc23515c1a087759dc6bf360cbc26e9e80e00394fd2ef1b68d2024a3",
  "url": "https://osv.dev/vulnerability/CVE-2026-89716",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "zram: validate deflate params",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: zram: validate deflate params We must validate user-supplied deflate winbits before we pass it to zlib_deflate_workspacesize(), which triggers BUG_ON() if winbits value is outside of valid ranges.",
    "evidence": "osv:CVE-2026-89716",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.18.50",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-89716",
      "aliases": [
        "CVE-2026-89716"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "dc75a0d93bd5a1c64104efb4ec680463afbdd755"
                },
                {
                  "fixed": "923578d0f0d0703c3db61ab35dc37075ae53b0bd"
                },
                {
                  "fixed": "e23fac4ab2a5728386477b98a402a1042b21bffb"
                },
                {
                  "fixed": "ec7607ac4717ff521c9c1e9d8271c26293345513"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89716.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.16.0"
                },
                {
                  "fixed": "6.18.50"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89716.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.190480734Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/923578d0f0d0703c3db61ab35dc37075ae53b0bd",
        "https://git.kernel.org/stable/c/e23fac4ab2a5728386477b98a402a1042b21bffb",
        "https://git.kernel.org/stable/c/ec7607ac4717ff521c9c1e9d8271c26293345513",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89716.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89716",
        "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/2026/89xxx/CVE-2026-89716.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89716",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 490754,
  "published_at": "2026-09-11T19:46:29.953+00:00"
}