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FKIE_CVE-2026-80871

Vulnerability from fkie_nvd - Published: 2026-09-04 17:16 - Updated: 2026-09-04 17:16
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32b4d29280ed2a991dc196d5845b892acedc63b8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/83f29da85dc9d9a32fe62cd1055e8e6705e6bf80
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9634db561e1594c151923f4950c012161c545c93
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/Kconfig",
            "drivers/crypto/xilinx/xilinx-trng.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "83f29da85dc9d9a32fe62cd1055e8e6705e6bf80",
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "versionType": "git"
            },
            {
              "lessThan": "9634db561e1594c151923f4950c012161c545c93",
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "versionType": "git"
            },
            {
              "lessThan": "32b4d29280ed2a991dc196d5845b892acedc63b8",
              "status": "affected",
              "version": "8979744aca8096ee5072798dfc1181606919b35d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/crypto/Kconfig",
            "drivers/crypto/xilinx/xilinx-trng.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-80871",
  "lastModified": "2026-09-04T17:16:59.027",
  "metrics": {},
  "published": "2026-09-04T17:16:59.027",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/32b4d29280ed2a991dc196d5845b892acedc63b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/83f29da85dc9d9a32fe62cd1055e8e6705e6bf80"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9634db561e1594c151923f4950c012161c545c93"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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