CVE-2022-49566 (GCVE-0-2022-49566)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:02
VLAI
Title
crypto: qat - fix memory leak in RSA
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: qat - fix memory leak in RSA When an RSA key represented in form 2 (as defined in PKCS #1 V2.1) is used, some components of the private key persist even after the TFM is released. Replace the explicit calls to free the buffers in qat_rsa_exit_tfm() with a call to qat_rsa_clear_ctx() which frees all buffers referenced in the TFM context.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:37 UTC
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < a843925e0287eebb4aa808666bf22c664dfe4c53 (git)
Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 0f967fdc09955221a1951a279481b0bf4d359941 (git)
Affected: 879f77e9071f029e1c9bd5a75814ecf51370f846 , < 80a52e1ee7757b742f96bfb0d58f0c14eb6583d0 (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.15.58 , ≤ 5.15.* (semver)
Unaffected: 5.18.15 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: qat - fix memory leak in RSA\n\nWhen an RSA key represented in form 2 (as defined in PKCS #1 V2.1) is\nused, some components of the private key persist even after the TFM is\nreleased.\nReplace the explicit calls to free the buffers in qat_rsa_exit_tfm()\nwith a call to qat_rsa_clear_ctx() which frees all buffers referenced in\nthe TFM context."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T19:02:25.754Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a843925e0287eebb4aa808666bf22c664dfe4c53"
            },
            {
              "url": "https://git.kernel.org/stable/c/0f967fdc09955221a1951a279481b0bf4d359941"
            },
            {
              "url": "https://git.kernel.org/stable/c/80a52e1ee7757b742f96bfb0d58f0c14eb6583d0"
            }
          ],
          "title": "crypto: qat - fix memory leak in RSA",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-49566",
        "datePublished": "2025-02-26T02:23:11.749Z",
        "dateReserved": "2025-02-26T02:21:30.410Z",
        "dateUpdated": "2026-05-11T19:02:25.754Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.
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  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.