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CVE-2026-80833

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

crypto: sun8i-ss - Remove crypto_rng interface

Since the crypto_rng interface for hardware PRNGs is unused and is redundant with hwrng and the actual Linux RNG, it's being phased out. Most drivers for it were already removed. Go ahead and remove the sun8i-ss support which is one of the only remaining ones.

As usual for crypto_rng, this driver was also buggy: its ->generate() function had a use-after-free vulnerability due to using wait_for_completion_interruptible_timeout() without handling shutting down the DMA operation if a signal is sent.

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Also, it had a buffer overread bug in the line 'memcpy(ctx->seed, d + dlen, ctx->slen);'. There's no point in fixing these bugs separately only to remove the code anyway, so this commit is marked with Fixes and Cc stable.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-80833",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "9127d2a88c1795ddc4ba7687fea01cab1908fae1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "64f3406ad082c00fb7a80240a24943ccb6d9a538",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "6117968fe2cdcde28ac3aa6ec814485320af4049",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "a41e4ba94ad4571aa2e566baa395e6e871e0fd4f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "d29ccf9eeb67d775221e49a079caa1af83427afa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "7c257a295e05ceb8f78aa3efecc4e9ce19c3313f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ac2614d721dea2ff273af19c6c5d508d58a2bb3e",
              "lessThan": "a78446ee6fae86ac8733f120e3ffce2e5d9384f5",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/crypto/allwinner/Kconfig",
            "drivers/crypto/allwinner/sun8i-ss/Makefile",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.10",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/crypto/allwinner/Kconfig",
            "drivers/crypto/allwinner/sun8i-ss/Makefile",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss-core.c",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss-prng.c",
            "drivers/crypto/allwinner/sun8i-ss/sun8i-ss.h"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-04T16:18:11.577",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6117968fe2cdcde28ac3aa6ec814485320af4049",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/64f3406ad082c00fb7a80240a24943ccb6d9a538",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7c257a295e05ceb8f78aa3efecc4e9ce19c3313f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9127d2a88c1795ddc4ba7687fea01cab1908fae1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a41e4ba94ad4571aa2e566baa395e6e871e0fd4f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a78446ee6fae86ac8733f120e3ffce2e5d9384f5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d29ccf9eeb67d775221e49a079caa1af83427afa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: sun8i-ss - Remove crypto_rng interface\n\nSince the crypto_rng interface for hardware PRNGs is unused and is\nredundant with hwrng and the actual Linux RNG, it's being phased out.\nMost drivers for it were already removed.  Go ahead and remove the\nsun8i-ss support which is one of the only remaining ones.\n\nAs usual for crypto_rng, this driver was also buggy: its ->generate()\nfunction had a use-after-free vulnerability due to using\nwait_for_completion_interruptible_timeout() without handling shutting\ndown the DMA operation if a signal is sent.  Also, it had a buffer\noverread bug in the line 'memcpy(ctx->seed, d + dlen, ctx->slen);'.\nThere's no point in fixing these bugs separately only to remove the code\nanyway, so this commit is marked with Fixes and Cc stable."
    }
  ],
  "lastModified": "2026-10-03T11:17:39.887",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}