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CVE-2026-80833 (GCVE-0-2026-80833)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:54 – Updated: 2026-09-07 15:45
VLAI
Title
crypto: sun8i-ss - Remove crypto_rng interface
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ac2614d721dea2ff273af19c6c5d508d58a2bb3e , < d29ccf9eeb67d775221e49a079caa1af83427afa (git)
Affected: ac2614d721dea2ff273af19c6c5d508d58a2bb3e , < 7c257a295e05ceb8f78aa3efecc4e9ce19c3313f (git)
Affected: ac2614d721dea2ff273af19c6c5d508d58a2bb3e , < 8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f (git)
Affected: ac2614d721dea2ff273af19c6c5d508d58a2bb3e , < a78446ee6fae86ac8733f120e3ffce2e5d9384f5 (git)
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Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.3 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "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": [
            "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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              "version": "5.10"
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.2.3",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
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                },
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                },
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
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        }
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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": "2026-09-07T15:45:11.069Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/d29ccf9eeb67d775221e49a079caa1af83427afa"
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        },
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          "url": "https://git.kernel.org/stable/c/8ab58786b4c63b8f1b6c522f33bb67a3c8c2791f"
        },
        {
          "url": "https://git.kernel.org/stable/c/a78446ee6fae86ac8733f120e3ffce2e5d9384f5"
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      ],
      "title": "crypto: sun8i-ss - Remove crypto_rng interface",
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  },
  "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": "2026-09-07T15:45:11.069Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-80833",
      "date": "2026-09-15",
      "epss": "0.00168",
      "percentile": "0.06407"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-09T01:53:37.000Z",
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      "id": "msrc_CVE-2026-80833",
      "initial_release_date": "2026-09-07T01:51:31.000Z",
      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "crypto: sun8i-ss - Remove crypto_rng interface",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-80833.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-80833\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-04T16:18:11.577\",\"lastModified\":\"2026-09-07T16:17:30.227\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"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\",\"versions\":[{\"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\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"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\",\"versions\":[{\"version\":\"5.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.109\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.50\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.3\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"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/a78446ee6fae86ac8733f120e3ffce2e5d9384f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d29ccf9eeb67d775221e49a079caa1af83427afa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-10T01:51:00Z",
      "cve": "CVE-2026-80833",
      "id": "CVE-2026-80833",
      "initial_release_date": "2026-09-08T17:16:33Z",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "143",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80833",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80833.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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.