Vulnerability-Lookup

GHSA-759V-33RJ-5HJH

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Mask pseudo pointer values in verifier logs

print_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo sources when pointer leaks are not allowed, but the mask only covers BPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE.

BPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can also be resolved to kernel pointer values before the verifier log prints the instruction. Include them in the existing pointer classification so the log prints 0x0 instead of the rewritten address.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-72402"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:13Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mask pseudo pointer values in verifier logs\n\nprint_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo\nsources when pointer leaks are not allowed, but the mask only covers\nBPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE.\n\nBPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can\nalso be resolved to kernel pointer values before the verifier log prints\nthe instruction. Include them in the existing pointer classification so\nthe log prints 0x0 instead of the rewritten address.",
  "id": "GHSA-759v-33rj-5hjh",
  "modified": "2026-08-15T06:32:23Z",
  "published": "2026-08-15T06:32:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72402"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c53d16b174dd9e02243fc0e85089e2aa6a0d21a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72a85e9464a5332fb2cd7efd26d9295275ceda2d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72402 (GCVE-0-2026-72402)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:56 – Updated: 2026-08-17 05:13

Title

bpf: Mask pseudo pointer values in verifier logs

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Mask pseudo pointer values in verifier logs print_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo sources when pointer leaks are not allowed, but the mask only covers BPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE. BPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can also be resolved to kernel pointer values before the verifier log prints the instruction. Include them in the existing pointer classification so the log prints 0x0 instead of the rewritten address.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/1c53d16b174dd9e02…
https://git.kernel.org/stable/c/72a85e9464a5332fb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4976b718c3551faba2c0616ef55ebeb74db1c5ca , < 1c53d16b174dd9e02243fc0e85089e2aa6a0d21a (git) Affected: 4976b718c3551faba2c0616ef55ebeb74db1c5ca , < 72a85e9464a5332fb2cd7efd26d9295275ceda2d (git)
Linux	Linux	Affected: 5.10 Unaffected: 0 , < 5.10 (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/disasm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1c53d16b174dd9e02243fc0e85089e2aa6a0d21a",
              "status": "affected",
              "version": "4976b718c3551faba2c0616ef55ebeb74db1c5ca",
              "versionType": "git"
            },
            {
              "lessThan": "72a85e9464a5332fb2cd7efd26d9295275ceda2d",
              "status": "affected",
              "version": "4976b718c3551faba2c0616ef55ebeb74db1c5ca",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/disasm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mask pseudo pointer values in verifier logs\n\nprint_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo\nsources when pointer leaks are not allowed, but the mask only covers\nBPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE.\n\nBPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can\nalso be resolved to kernel pointer values before the verifier log prints\nthe instruction. Include them in the existing pointer classification so\nthe log prints 0x0 instead of the rewritten address."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:13:59.131Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1c53d16b174dd9e02243fc0e85089e2aa6a0d21a"
        },
        {
          "url": "https://git.kernel.org/stable/c/72a85e9464a5332fb2cd7efd26d9295275ceda2d"
        }
      ],
      "title": "bpf: Mask pseudo pointer values in verifier logs",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72402",
    "datePublished": "2026-08-15T05:56:26.816Z",
    "dateReserved": "2026-08-09T03:40:39.925Z",
    "dateUpdated": "2026-08-17T05:13:59.131Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-759V-33RJ-5HJH

CVE-2026-72402 (GCVE-0-2026-72402)

Tags

Sightings

Nomenclature