{"id":"CVE-2025-38651","summary":"landlock: Fix warning from KUnit tests","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nlandlock: Fix warning from KUnit tests\n\nget_id_range() expects a positive value as first argument but\nget_random_u8() can return 0.  Fix this by clamping it.\n\nValidated by running the test in a for loop for 1000 times.\n\nNote that MAX() is wrong as it is only supposed to be used for\nconstants, but max() is good here.\n\n  [..]     ok 9 test_range2_rand1\n  [..]     ok 10 test_range2_rand2\n  [..]     ok 11 test_range2_rand15\n  [..] ------------[ cut here ]------------\n  [..] 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))\n  [..] Modules linked in:\n  [..] CPU: 6 UID: 0 PID: 104 Comm: kunit_try_catch Tainted: G                 N  6.16.0-rc1-dev-00001-g314a2f98b65f #1 PREEMPT(undef)\n  [..] Tainted: [N]=TEST\n  [..] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n  [..] RIP: 0010:test_range2_rand16 (security/landlock/id.c:99 (discriminator 1) security/landlock/id.c:234 (discriminator 1))\n  [..] 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 \u003c0f\u003e 0b ba 01 00 00 00 e9 68 fe ff ff 49 89 45 a8 49 8d 4d a0 45 31\n\n  [..] RSP: 0000:ffff888104eb7c78 EFLAGS: 00010246\n  [..] RAX: 0000000000000000 RBX: 000000000870822c RCX: 0000000000000000\n            ^^^^^^^^^^^^^^^^\n  [..]\n  [..] Call Trace:\n  [..]\n  [..] ---[ end trace 0000000000000000 ]---\n  [..]     ok 12 test_range2_rand16\n  [..] # landlock_id: pass:12 fail:0 skip:0 total:12\n  [..] # Totals: pass:12 fail:0 skip:0 total:12\n  [..] ok 1 landlock_id\n\n[mic: Minor cosmetic improvements]","modified":"2026-04-02T12:48:04.118019Z","published":"2025-08-22T16:00:55.579Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38651.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/127183361b69dbb7ac3246ad4726f93400481249"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e0a69cf2c03e61bd8069becb97f66c173d0d1fa1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38651.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38651"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.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"}}],"schema_version":"1.7.5"}