{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2"
            },
            {
              "fixed": "830c1f3e71989448652973375ef5e39b6ede47a3"
            },
            {
              "fixed": "c5c79d92da0f9a09f48be5e2aabed2d6d1a96294"
            },
            {
              "fixed": "af7341616b742ad2c374a90998bd650a035f694d"
            },
            {
              "fixed": "1b864b6cb213bbd7b406e9b2e98c962077f300df"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74404.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one\n\nSashiko notes:\n\n\u003e regarding the bounds check in snp_filter_reserved_mem_regions()\n\u003e called via walk_iomem_res_desc(): does the check\n\u003e if ((range_list-\u003enum_elements * 16 + 8) \u003e PAGE_SIZE)\n\u003e allow an off-by-one heap buffer overflow?\n\u003e\n\u003e If range_list-\u003enum_elements is 255, 255 * 16 + 8 = 4088, which is \u003c= 4096.\n\u003e Writing range-\u003ebase (8 bytes) fills 4088-4095, but writing range-\u003epage_count\n\u003e (4 bytes) would write to 4096-4099, overflowing the kzalloc-allocated\n\u003e PAGE_SIZE buffer.\n\nFix this by accounting for the entry about to be written to, in addition to\nthe entries that are already allocated.",
  "id": "CVE-2026-74404",
  "modified": "2026-08-18T03:31:04.556558889Z",
  "published": "2026-08-15T05:59:14.073Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1b864b6cb213bbd7b406e9b2e98c962077f300df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/830c1f3e71989448652973375ef5e39b6ede47a3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af7341616b742ad2c374a90998bd650a035f694d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c5c79d92da0f9a09f48be5e2aabed2d6d1a96294"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74404.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74404"
    },
    {
      "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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "crypto: ccp - Fix snp_filter_reserved_mem_regions() off-by-one"
}