cve/published/2025/CVE-2025-21965.json

{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
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         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()\n\nIf a BPF scheduler provides an invalid CPU (outside the nr_cpu_ids\nrange) as prev_cpu to scx_bpf_select_cpu_dfl() it can cause a kernel\ncrash.\n\nTo prevent this, validate prev_cpu in scx_bpf_select_cpu_dfl() and\ntrigger an scx error if an invalid CPU is specified."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/sched/ext.c"
               ],
               "versions": [
                  {
                     "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                     "lessThan": "752b56bb76e2471197d25d6948d85753043b10da",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                     "lessThan": "515680e76c536dd4aa8e2b5d674b0d441baddf5b",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "f0e1a0643a59bf1f922fa209cec86a170b784f3f",
                     "lessThan": "9360dfe4cbd62ff1eb8217b815964931523b75b3",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/sched/ext.c"
               ],
               "versions": [
                  {
                     "version": "6.12",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "6.12",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.12.20",
                     "lessThanOrEqual": "6.12.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.13.8",
                     "lessThanOrEqual": "6.13.*",
                     "status": "unaffected",
                     "versionType": "semver"
                  },
                  {
                     "version": "6.14",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "cpeApplicability": [
            {
               "nodes": [
                  {
                     "operator": "OR",
                     "negate": false,
                     "cpeMatch": [
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.12",
                           "versionEndExcluding": "6.12.20"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.12",
                           "versionEndExcluding": "6.13.8"
                        },
                        {
                           "vulnerable": true,
                           "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                           "versionStartIncluding": "6.12",
                           "versionEndExcluding": "6.14"
                        }
                     ]
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/752b56bb76e2471197d25d6948d85753043b10da"
            },
            {
               "url": "https://git.kernel.org/stable/c/515680e76c536dd4aa8e2b5d674b0d441baddf5b"
            },
            {
               "url": "https://git.kernel.org/stable/c/9360dfe4cbd62ff1eb8217b815964931523b75b3"
            }
         ],
         "title": "sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()",
         "x_generator": {
            "engine": "bippy-1.2.0"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2025-21965",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}