{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18e3ffde1822f0b48b1753bf34aa97ce839df1d8",
              "status": "affected",
              "version": "fd09af010788a884de1c39537c288830c3d305db",
              "versionType": "git"
            },
            {
              "lessThan": "10f86a2a5c91fc4c4d001960f1c21abe52545ef6",
              "status": "affected",
              "version": "fd09af010788a884de1c39537c288830c3d305db",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "48be3df15aa19c04eadf156c9129293c9a10389f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "cd4644d904e1d153d516e73e2e127e7a2fe687e1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6e0bc946cbeec538322820786b5fb5200a2216ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a7e52f7f675046d9ffc5692d815fa67c82fcdbf5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "db7f8c57dbdd31f7e59f8dc8d1e1b38607a320ef",
              "versionType": "git"
            },
            {
              "lessThan": "5.8",
              "status": "affected",
              "version": "5.7.18",
              "versionType": "semver"
            },
            {
              "lessThan": "5.9",
              "status": "affected",
              "version": "5.8.4",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.61",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/filter.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.9"
            },
            {
              "lessThan": "5.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n   as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n   leading to stack-out-of-bounds access in helpers like\n   bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n   verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n   added instruction.\n - Adding BPF_MOV64_IMM(si-\u003edst_reg, 0) after the temp register\n   restore in the !fullsock path, placed after the restore because\n   dst_reg == src_reg means we need src_reg intact to read ctx-\u003etemp."
    }
  ],
  "id": "CVE-2026-53078",
  "lastModified": "2026-06-28T08:16:33.087",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-24T17:17:21.850",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

{
  "affected": [],
  "aliases": [
    "CVE-2026-53078"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:21Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix same-register dst/src OOB read and pointer leak in sock_ops\n\nWhen a BPF sock_ops program accesses ctx fields with dst_reg == src_reg,\nthe SOCK_OPS_GET_SK() and SOCK_OPS_GET_FIELD() macros fail to zero the\ndestination register in the !fullsock / !locked_tcp_sock path.\n\nBoth macros borrow a temporary register to check is_fullsock /\nis_locked_tcp_sock when dst_reg == src_reg, because dst_reg holds the\nctx pointer. When the check is false (e.g., TCP_NEW_SYN_RECV state with\na request_sock), dst_reg should be zeroed but is not, leaving the stale\nctx pointer:\n\n - SOCK_OPS_GET_SK: dst_reg retains the ctx pointer, passes NULL checks\n   as PTR_TO_SOCKET_OR_NULL, and can be used as a bogus socket pointer,\n   leading to stack-out-of-bounds access in helpers like\n   bpf_skc_to_tcp6_sock().\n\n - SOCK_OPS_GET_FIELD: dst_reg retains the ctx pointer which the\n   verifier believes is a SCALAR_VALUE, leaking a kernel pointer.\n\nFix both macros by:\n - Changing JMP_A(1) to JMP_A(2) in the fullsock path to skip the\n   added instruction.\n - Adding BPF_MOV64_IMM(si-\u003edst_reg, 0) after the temp register\n   restore in the !fullsock path, placed after the restore because\n   dst_reg == src_reg means we need src_reg intact to read ctx-\u003etemp.",
  "id": "GHSA-pwr6-cvf5-35f3",
  "modified": "2026-06-28T09:31:41Z",
  "published": "2026-06-24T18:32:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53078"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10f86a2a5c91fc4c4d001960f1c21abe52545ef6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/18e3ffde1822f0b48b1753bf34aa97ce839df1d8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-53078 bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53078.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops",
    "tracking": {
      "current_release_date": "2026-06-28T02:04:25.000Z",
      "generator": {
        "date": "2026-06-28T07:10:57.315Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-53078",
      "initial_release_date": "2026-06-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-06-27T01:11:33.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-06-28T02:04:25.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 kernel 0:6.6.143.1-1.azl3",
                "product": {
                  "name": "azl3 kernel 0:6.6.143.1-1.azl3",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version_range",
                "name": "azl3 kernel 0:6.6.141.1-1.azl3",
                "product": {
                  "name": "azl3 kernel 0:6.6.141.1-1.azl3",
                  "product_id": "2"
                }
              }
            ],
            "category": "product_name",
            "name": "kernel"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.143.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.141.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-53078",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1",
          "17084-2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-53078 bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-53078.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-06-27T01:11:33.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-06-27T01:11:33.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-2"
          ]
        }
      ],
      "title": "bpf: Fix same-register dst/src OOB read and pointer leak in sock_ops"
    }
  ]
}