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FKIE_CVE-2026-72401

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix insn_aux_data leak on verifier err_free_env path When bpf_check() allocates env->insn_aux_data successfully but later fails to allocate env->succ, it jumps directly to err_free_env. The existing vfree(env->insn_aux_data) sits before the err_free_env label, so that direct jump bypasses it and leaks insn_aux_data. Move vfree(env->insn_aux_data) into err_free_env so all early and late exit paths release it consistently.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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": "d8df91756890de058646597367507b239a6d2025",
              "status": "affected",
              "version": "2f69c5685427308d2f312646779313f3677536bc",
              "versionType": "git"
            },
            {
              "lessThan": "26490a375cb9be9bac96b5171610fd85ca6c2305",
              "status": "affected",
              "version": "2f69c5685427308d2f312646779313f3677536bc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix insn_aux_data leak on verifier err_free_env path\n\nWhen bpf_check() allocates env-\u003einsn_aux_data successfully but later\nfails to allocate env-\u003esucc, it jumps directly to err_free_env.\n\nThe existing vfree(env-\u003einsn_aux_data) sits before the err_free_env\nlabel, so that direct jump bypasses it and leaks insn_aux_data.\n\nMove vfree(env-\u003einsn_aux_data) into err_free_env so all early and late\nexit paths release it consistently."
    }
  ],
  "id": "CVE-2026-72401",
  "lastModified": "2026-08-17T06:19:06.777",
  "metrics": {},
  "published": "2026-08-15T06:22:13.687",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26490a375cb9be9bac96b5171610fd85ca6c2305"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d8df91756890de058646597367507b239a6d2025"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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