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CVE-2026-92519

Estado: RecibidaSin puntuar—

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

riscv, bpf: Fix memory leak in bpf_jit_free

When bpf_int_jit_compile() is called for subprograms, it returns early during the first pass (!prog->is_func || extra_pass is false), keeping ctx->offset alive for the subsequent extra pass.

If JIT compilation fails for a later subprogram, the BPF core aborts and calls bpf_jit_free() to clean up the first subprogram. However, bpf_jit_free() fails to free jit_data->ctx.offset, which causes a memory leak of the JIT context offsets array.

Fix this by adding the missing kfree(jit_data->ctx.offset) in bpf_jit_free().

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-92519",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "48a8f78c50bd6f7f08fd40daa62252fd043f2f18",
              "lessThan": "b594c23f584ab032a5eae809eee81b809dd27330",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "48a8f78c50bd6f7f08fd40daa62252fd043f2f18",
              "lessThan": "5cadc66b534fe8140441916200a20c7efb06a388",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "48a8f78c50bd6f7f08fd40daa62252fd043f2f18",
              "lessThan": "2a3a29e90021806ea00527f6458cfd2edb58b42a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "48a8f78c50bd6f7f08fd40daa62252fd043f2f18",
              "lessThan": "369e4635d04801f394d5bd42556f21029e95ff93",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "arch/riscv/net/bpf_jit_core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "arch/riscv/net/bpf_jit_core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:54.787",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2a3a29e90021806ea00527f6458cfd2edb58b42a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/369e4635d04801f394d5bd42556f21029e95ff93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5cadc66b534fe8140441916200a20c7efb06a388",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b594c23f584ab032a5eae809eee81b809dd27330",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv, bpf: Fix memory leak in bpf_jit_free\n\nWhen bpf_int_jit_compile() is called for subprograms, it returns early\nduring the first pass (!prog->is_func || extra_pass is false), keeping\nctx->offset alive for the subsequent extra pass.\n\nIf JIT compilation fails for a later subprogram, the BPF core aborts\nand calls bpf_jit_free() to clean up the first subprogram. However,\nbpf_jit_free() fails to free jit_data->ctx.offset, which causes a\nmemory leak of the JIT context offsets array.\n\nFix this by adding the missing kfree(jit_data->ctx.offset) in\nbpf_jit_free()."
    }
  ],
  "lastModified": "2026-09-17T17:17:54.787",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}