ghsa-x3wq-gp4v-7w57
Vulnerability from github
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_rand16 [..] # landlock_id: pass:12 fail:0 skip:0 total:12 [..] # Totals: pass:12 fail:0 skip:0 total:12 [..] ok 1 landlock_id
[mic: Minor cosmetic improvements]
{
"affected": [],
"aliases": [
"CVE-2025-38651"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-08-22T16:15:39Z",
"severity": null
},
"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]",
"id": "GHSA-x3wq-gp4v-7w57",
"modified": "2025-08-22T18:31:22Z",
"published": "2025-08-22T18:31:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38651"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
| Author | Source | Type | Date |
|---|
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