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CVE-2026-80871 (GCVE-0-2026-80871)

Vulnerability from cvelistv5 – Published: 2026-09-04 16:48 – Updated: 2026-09-04 16:48
VLAI
Title
crypto: xilinx-trng - Remove crypto_rng interface
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: xilinx-trng - Remove crypto_rng interface Implementing the crypto_rng interface has no purpose, as it isn't used in practice. It's being removed from other drivers too. Just remove it. This leaves hwrng, which is actually used. Tagging with 'Cc stable' due to the bugs that this removes: - xtrng_trng_generate() sometimes returned success even when it didn't fill in all the bytes. - It was possible for xtrng_trng_generate() and xtrng_hwrng_trng_read() to run concurrently and interfere with each other, as the locking code in xtrng_hwrng_trng_read() was broken.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8979744aca8096ee5072798dfc1181606919b35d , < 83f29da85dc9d9a32fe62cd1055e8e6705e6bf80 (git)
Affected: 8979744aca8096ee5072798dfc1181606919b35d , < 9634db561e1594c151923f4950c012161c545c93 (git)
Affected: 8979744aca8096ee5072798dfc1181606919b35d , < 32b4d29280ed2a991dc196d5845b892acedc63b8 (git)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/Kconfig",
            "drivers/crypto/xilinx/xilinx-trng.c"
          ],
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          "vendor": "Linux",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: xilinx-trng - Remove crypto_rng interface\n\nImplementing the crypto_rng interface has no purpose, as it isn\u0027t used\nin practice.  It\u0027s being removed from other drivers too.  Just remove\nit.  This leaves hwrng, which is actually used.\n\nTagging with \u0027Cc stable\u0027 due to the bugs that this removes:\n\n  - xtrng_trng_generate() sometimes returned success even when it didn\u0027t\n    fill in all the bytes.\n\n  - It was possible for xtrng_trng_generate() and\n    xtrng_hwrng_trng_read() to run concurrently and interfere with each\n    other, as the locking code in xtrng_hwrng_trng_read() was broken."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T16:48:34.587Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/83f29da85dc9d9a32fe62cd1055e8e6705e6bf80"
        },
        {
          "url": "https://git.kernel.org/stable/c/9634db561e1594c151923f4950c012161c545c93"
        },
        {
          "url": "https://git.kernel.org/stable/c/32b4d29280ed2a991dc196d5845b892acedc63b8"
        }
      ],
      "title": "crypto: xilinx-trng - Remove crypto_rng interface",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80871",
    "datePublished": "2026-09-04T16:48:34.587Z",
    "dateReserved": "2026-08-26T14:34:25.798Z",
    "dateUpdated": "2026-09-04T16:48:34.587Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-09-13",
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      "percentile": "0.04908"
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    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-08T00:08:40Z",
      "cve": "CVE-2026-80871",
      "id": "CVE-2026-80871",
      "initial_release_date": "2026-09-07T16:19:20Z",
      "product_status:known_not_affected": "353",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80871",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80871.json",
      "version": "3"
    }
  }
}



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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.


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