Vulnerability-Lookup

GHSA-WQ6X-XF86-6RWF

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-05-27 15:33

Details

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:

When name_size() returns an error (unrecognized hash algorithm), the function returns directly without destroying the buffer.
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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46096"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:31Z",
    "severity": null
  },
  "details": "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": "GHSA-wq6x-xf86-6rwf",
  "modified": "2026-05-27T15:33:24Z",
  "published": "2026-05-27T15:33:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46096"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2f434be87e256fd58254f60ddf5d7d58e775ca0b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0f75a3d98b7959a8677b6363e23190f3018636b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8775d9d9062da662cc861f9ff7722a65896d4cd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46096 (GCVE-0-2026-46096)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:58 – Updated: 2026-05-27 12:58

Title

tpm2-sessions: Fix missing tpm_buf_destroy() in tpm2_read_public()

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.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/f8775d9d9062da662…
https://git.kernel.org/stable/c/2f434be87e256fd58…
https://git.kernel.org/stable/c/f0f75a3d98b7959a8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 20eda7c74b69fe9e1caf9b930a5c016bf8d755fa , < f8775d9d9062da662cc861f9ff7722a65896d4cd (git) Affected: bda1cbf73c6e241267c286427f2ed52b5735d872 , < 2f434be87e256fd58254f60ddf5d7d58e775ca0b (git) Affected: bda1cbf73c6e241267c286427f2ed52b5735d872 , < f0f75a3d98b7959a8677b6363e23190f3018636b (git) Affected: a3b7eb67225c486a2da357c5db3e386f4e64bcde (git) Affected: 6.18.3 , < 6.18.27 (semver) Affected: 6.12.64 , < 6.13 (semver)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)

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          "programFiles": [
            "drivers/char/tpm/tpm2-sessions.c"
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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.

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GHSA-WQ6X-XF86-6RWF

CVE-2026-46096 (GCVE-0-2026-46096)

Tags

Sightings

Nomenclature