FKIE_CVE-2026-46096

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: tpm2-sessions: Fix missing tpm_buf_destroy() in tpm2_read_public() tpm2_read_public() calls tpm_buf_init() but fails to call tpm_buf_destroy() on two exit paths, leaking a page allocation: 1. When name_size() returns an error (unrecognized hash algorithm), the function returns directly without destroying the buffer. 2. On the success path, the buffer is never destroyed before returning. All other error paths in the function correctly call tpm_buf_destroy() before returning. Fix both by adding the missing tpm_buf_destroy() calls.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f434be87e256fd58254f60ddf5d7d58e775ca0b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0f75a3d98b7959a8677b6363e23190f3018636b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f8775d9d9062da662cc861f9ff7722a65896d4cd
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm2-sessions: Fix missing tpm_buf_destroy() in tpm2_read_public()\n\ntpm2_read_public() calls tpm_buf_init() but fails to call\ntpm_buf_destroy() on two exit paths, leaking a page allocation:\n\n1. When name_size() returns an error (unrecognized hash algorithm),\n   the function returns directly without destroying the buffer.\n\n2. On the success path, the buffer is never destroyed before\n   returning.\n\nAll other error paths in the function correctly call\ntpm_buf_destroy() before returning.\n\nFix both by adding the missing tpm_buf_destroy() calls."
    }
  ],
  "id": "CVE-2026-46096",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:31.220",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2f434be87e256fd58254f60ddf5d7d58e775ca0b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f0f75a3d98b7959a8677b6363e23190f3018636b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f8775d9d9062da662cc861f9ff7722a65896d4cd"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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