CVE-2026-80833 (GCVE-0-2026-80833)
Vulnerability from cvelistv5
Published
2026-09-04 15:54
Modified
2026-10-19 08:44
Severity ?
Summary
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. 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.
References
Impacted products
Vendor Product Version
Linux Linux Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
Version: ac2614d721dea2ff273af19c6c5d508d58a2bb3e
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{
  "containers": {
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        {
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          "product": "Linux",
          "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"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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            "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"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "lessThan": "5.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
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              "version": "5.15.222",
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            },
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              "version": "6.1.189",
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              "version": "6.6.158",
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            },
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              "lessThanOrEqual": "6.12.*",
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              "version": "6.12.109",
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            },
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              "version": "6.18.50",
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              "version": "7.2.3",
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            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "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\u0027s 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 -\u003egenerate()\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 \u0027memcpy(ctx-\u003eseed, d + dlen, ctx-\u003eslen);\u0027.\nThere\u0027s no point in fixing these bugs separately only to remove the code\nanyway, so this commit is marked with Fixes and Cc stable."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:44:25.619Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9127d2a88c1795ddc4ba7687fea01cab1908fae1"
        },
        {
          "url": "https://git.kernel.org/stable/c/64f3406ad082c00fb7a80240a24943ccb6d9a538"
        },
        {
          "url": "https://git.kernel.org/stable/c/6117968fe2cdcde28ac3aa6ec814485320af4049"
        },
        {
          "url": "https://git.kernel.org/stable/c/a41e4ba94ad4571aa2e566baa395e6e871e0fd4f"
        },
        {
          "url": "https://git.kernel.org/stable/c/d29ccf9eeb67d775221e49a079caa1af83427afa"
        },
        {
          "url": "https://git.kernel.org/stable/c/7c257a295e05ceb8f78aa3efecc4e9ce19c3313f"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a78446ee6fae86ac8733f120e3ffce2e5d9384f5"
        }
      ],
      "title": "crypto: sun8i-ss - Remove crypto_rng interface",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80833",
    "datePublished": "2026-09-04T15:54:41.795Z",
    "dateReserved": "2026-08-26T14:34:25.796Z",
    "dateUpdated": "2026-10-19T08:44:25.619Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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