CVE-2025-38651 (GCVE-0-2025-38651)

Vulnerability from cvelistv5 – Published: 2025-08-22 16:00 – Updated: 2025-09-29 05:55
VLAI?
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_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]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d9d2a68ed44bbae598a81cb95e0746fa6b13b57f , < 127183361b69dbb7ac3246ad4726f93400481249 (git)
Affected: d9d2a68ed44bbae598a81cb95e0746fa6b13b57f , < 7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189 (git)
Affected: d9d2a68ed44bbae598a81cb95e0746fa6b13b57f , < e0a69cf2c03e61bd8069becb97f66c173d0d1fa1 (git)
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    Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.10 , ≤ 6.15.* (semver)
Unaffected: 6.16.1 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "security/landlock/id.c"
          ],
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          "vendor": "Linux",
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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              "version": "6.15"
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              "status": "unaffected",
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              "versionType": "semver"
            },
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              "version": "6.16.1",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix"
            }
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      "cpeApplicability": [
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          "nodes": [
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "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]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-29T05:55:32.200Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/127183361b69dbb7ac3246ad4726f93400481249"
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        },
        {
          "url": "https://git.kernel.org/stable/c/e0a69cf2c03e61bd8069becb97f66c173d0d1fa1"
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      ],
      "title": "landlock: Fix warning from KUnit tests",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38651",
    "datePublished": "2025-08-22T16:00:55.579Z",
    "dateReserved": "2025-04-16T04:51:24.030Z",
    "dateUpdated": "2025-09-29T05:55:32.200Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38651\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-22T16:15:39.907\",\"lastModified\":\"2025-11-26T16:31:27.343\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: landlock: Se corrige la advertencia de las pruebas de KUnit: get_id_range() espera un valor positivo como primer argumento, pero get_random_u8() puede devolver 0. Se corrige mediante la fijaci\u00f3n de valores. Se valid\u00f3 ejecutando la prueba en un bucle for 1000 veces. Tenga en cuenta que MAX() es incorrecto, ya que solo se supone que debe usarse para constantes, pero max() es adecuado en este caso. [..] ok 9 test_range2_rand1 [..] ok 10 test_range2_rand2 [..] ok 11 test_range2_rand15 [..] ------------[ cortar aqu\u00ed ]------------ [..] ADVERTENCIA: CPU: 6 PID: 104 en security/landlock/id.c:99 test_range2_rand16 (security/landlock/id.c:99 (discriminador 1) security/landlock/id.c:234 (discriminador 1)) [..] M\u00f3dulos vinculados en: [..] CPU: 6 UID: 0 PID: 104 Comm: kunit_try_catch Contaminado: GN 6.16.0-rc1-dev-00001-g314a2f98b65f #1 PREEMPT(undef) [..] Contaminado: [N]=TEST [..] Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 01/04/2014 [..] RIP: 0010:test_range2_rand16 (security/landlock/id.c:99 (discriminator 1) security/landlock/id.c:234 (discriminator 1)) [..] C\u00f3digo: 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 \u0026lt;0f\u0026gt; 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 ^^^^^^^^^^^^^^^^^^ [..] [..] Rastreo de llamadas: [..] [..] ---[ fin de rastreo 000000000000000 ]--- [..] ok 12 test_range2_rand16 [..] # landlock_id: pass:12 fail:0 skip:0 total:12 [..] # Totales: pasa:12 falla:0 salta:0 total:12 [..] ok 1 landlock_id [mic: Mejoras cosm\u00e9ticas menores]\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.15\",\"versionEndExcluding\":\"6.15.10\",\"matchCriteriaId\":\"2EA7D98E-F04C-44BE-AC61-F5ADC4C88EC6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.16\",\"versionEndExcluding\":\"6.16.1\",\"matchCriteriaId\":\"58182352-D7DF-4CC9-841E-03C1D852C3FB\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/127183361b69dbb7ac3246ad4726f93400481249\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7d9ec2cfe12dd0d7c1a58213b9bef1bec66a3189\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e0a69cf2c03e61bd8069becb97f66c173d0d1fa1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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