CVE-2025-38607 (GCVE-0-2025-38607)
Vulnerability from cvelistv5
Published
2025-08-19 17:03
Modified
2025-08-19 17:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: handle jset (if a & b ...) as a jump in CFG computation BPF_JSET is a conditional jump and currently verifier.c:can_jump() does not know about that. This can lead to incorrect live registers and SCC computation. E.g. in the following example: 1: r0 = 1; 2: r2 = 2; 3: if r1 & 0x7 goto +1; 4: exit; 5: r0 = r2; 6: exit; W/o this fix insn_successors(3) will return only (4), a jump to (5) would be missed and r2 won't be marked as alive at (3).
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/261b30ad1516f4b9edd500aa6e8d6315c8fc109a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3157f7e2999616ac91f4d559a8566214f74000a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65eb166b8636365ad3d6e36d50a7c5edfe6cc66e
Impacted products
Vendor Product Version
Linux Linux Version: 14c8552db64476ffc27c13dc6652fc0dac31c0ba
Version: 14c8552db64476ffc27c13dc6652fc0dac31c0ba
Version: 14c8552db64476ffc27c13dc6652fc0dac31c0ba
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   Linux Linux Version: 6.15
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "65eb166b8636365ad3d6e36d50a7c5edfe6cc66e",
              "status": "affected",
              "version": "14c8552db64476ffc27c13dc6652fc0dac31c0ba",
              "versionType": "git"
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          ]
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.15.*",
              "status": "unaffected",
              "version": "6.15.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.16.*",
              "status": "unaffected",
              "version": "6.16.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.17-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.15.10",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.16.1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17-rc1",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: handle jset (if a \u0026 b ...) as a jump in CFG computation\n\nBPF_JSET is a conditional jump and currently verifier.c:can_jump()\ndoes not know about that. This can lead to incorrect live registers\nand SCC computation.\n\nE.g. in the following example:\n\n   1: r0 = 1;\n   2: r2 = 2;\n   3: if r1 \u0026 0x7 goto +1;\n   4: exit;\n   5: r0 = r2;\n   6: exit;\n\nW/o this fix insn_successors(3) will return only (4), a jump to (5)\nwould be missed and r2 won\u0027t be marked as alive at (3)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-19T17:03:50.947Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/65eb166b8636365ad3d6e36d50a7c5edfe6cc66e"
        },
        {
          "url": "https://git.kernel.org/stable/c/261b30ad1516f4b9edd500aa6e8d6315c8fc109a"
        },
        {
          "url": "https://git.kernel.org/stable/c/3157f7e2999616ac91f4d559a8566214f74000a5"
        }
      ],
      "title": "bpf: handle jset (if a \u0026 b ...) as a jump in CFG computation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38607",
    "datePublished": "2025-08-19T17:03:50.947Z",
    "dateReserved": "2025-04-16T04:51:24.028Z",
    "dateUpdated": "2025-08-19T17:03:50.947Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38607\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-08-19T17:15:39.070\",\"lastModified\":\"2025-08-20T14:40:17.713\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbpf: handle jset (if a \u0026 b ...) as a jump in CFG computation\\n\\nBPF_JSET is a conditional jump and currently verifier.c:can_jump()\\ndoes not know about that. This can lead to incorrect live registers\\nand SCC computation.\\n\\nE.g. in the following example:\\n\\n   1: r0 = 1;\\n   2: r2 = 2;\\n   3: if r1 \u0026 0x7 goto +1;\\n   4: exit;\\n   5: r0 = r2;\\n   6: exit;\\n\\nW/o this fix insn_successors(3) will return only (4), a jump to (5)\\nwould be missed and r2 won\u0027t be marked as alive at (3).\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf: manejar jset (si a \u0026amp; b ...) como un salto en el c\u00e1lculo CFG. BPF_JSET es un salto condicional y actualmente verifier.c:can_jump() no lo detecta. Esto puede provocar registros activos y c\u00e1lculos SCC incorrectos. Por ejemplo, en el siguiente ejemplo: 1: r0 = 1; 2: r2 = 2; 3: si r1 \u0026amp; 0x7 goto +1; 4: salir; 5: r0 = r2; 6: salir; Sin esta correcci\u00f3n, insn_successors(3) solo devolver\u00e1 (4), se omitir\u00eda un salto a (5) y r2 no se marcar\u00eda como activo en (3).\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/261b30ad1516f4b9edd500aa6e8d6315c8fc109a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3157f7e2999616ac91f4d559a8566214f74000a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/65eb166b8636365ad3d6e36d50a7c5edfe6cc66e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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