landlock: Fix warning from KUnit tests

{
  "id": "6996211345d94eca99cd9b2bd300bbaa99cedcfbad82b97bdde5919717a03cb5",
  "url": "https://osv.dev/vulnerability/CVE-2025-38651",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "landlock: Fix warning from KUnit tests",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: landlock: Fix warning from KUnit tests get_id_range() expects a positive value as first argument but get_random_u8() can return 0. Fix this by clamping it. Validated by running the test in a for loop for 1000 times. Note that MAX() is wrong as it is only supposed to be used for constants, but max() is good here. [..] ok 9 test_range2_rand1 [..] ok 10 test_range2_rand2 [..] ok 11 test_range2_rand15 [..] ------------[ cut here ]------------ [..] WARNING: CPU: 6 PID: 104 at security/landlock/id.c:99 test_range2_rand16 (security/landlock/id.c:99 (discriminator 1) security/landlock/id.c:234 (discriminator 1)) [..] Modules linked in: [..] CPU: 6 UID: 0 PID: 104 Comm: kunit_try_catch Tainted: G N 6.16.0-rc1-dev-00001-g314a2f98b65f #1 PREEMPT(undef) [..] Tainted: [N]=TEST [..] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [..] RIP: 0010:test_range2_rand16 (security/landlock/id.c:99 (discriminator 1) security/landlock/id.c:234 (discriminator 1)) [..] Code: 49 c7 c0 10 70 30 82 4c 89 ff 48 c7 c6 a0 63 1e 83 49 c7 45 a0 e0 63 1e 83 e8 3f 95 17 00 e9 1f ff ff ff 0f 0b e9 df fd ff ff <0f> 0b ba 01 00 00 00 e9 68 fe ff ff 49 89 45 a8 49 8d 4d a0 45 31 [..] RSP: 0000:ffff888104eb7c78 EFLAGS: 00010246 [..] RAX: 0000000000000000 RBX: 000000000870822c RCX: 0000000000000000 ^^^^^^^^^^^^^^^^ [..] [..] Call Trace: [..] [..] ---[ end trace 0000000000000000 ]--- [..] ok 12 test_range2_ra",
    "evidence": "osv:CVE-2025-38651",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.15.10",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.16.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-38651",
      "aliases": [
        "CVE-2025-38651"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d9d2a68ed44bbae598a81cb95e0746fa6b13b57f"
                },
                {
                  "fixed": "127183361b69dbb7ac3246ad4726f93400481249"
                },
                {
                  "fixed": "7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189"
                },
                {
                  "fixed": "e0a69cf2c03e61bd8069becb97f66c173d0d1fa1"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38651.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.15.10"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.16.0"
                },
                {
                  "fixed": "6.16.1"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38651.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.708018059Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/127183361b69dbb7ac3246ad4726f93400481249",
        "https://git.kernel.org/stable/c/7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189",
        "https://git.kernel.org/stable/c/e0a69cf2c03e61bd8069becb97f66c173d0d1fa1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38651.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-38651",
        "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-2025-38651.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-38651",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 519166,
  "published_at": "2025-08-22T16:00:55.579+00:00"
}