CVE-2026-64314 (GCVE-0-2026-64314)
Vulnerability from cvelistv5
Published
2026-07-25 08:49
Modified
2026-08-17 04:53
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: crypto: chacha20poly1305 - validate poly1305 template argument chachapoly_create() still accepts the compatibility poly1305 parameter in the template name, but it assumes the second template argument is always present and immediately passes it to strcmp(). When the argument is missing, crypto_attr_alg_name() returns an error pointer. Check for that before comparing the name so malformed template instantiations fail with an error instead of dereferencing the error pointer in strcmp(). This matches the surrounding Crypto API template pattern where crypto_attr_alg_name() results are validated before string-specific use.
References
Impacted products
Vendor Product Version
Linux Linux Version: a298765e28adaea199f722142c10dae7e24dedf8
Version: a298765e28adaea199f722142c10dae7e24dedf8
Version: a298765e28adaea199f722142c10dae7e24dedf8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "crypto/chacha20poly1305.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0016d3c21c6ab60a20be7f565cefb5999f3adeb6",
              "status": "affected",
              "version": "a298765e28adaea199f722142c10dae7e24dedf8",
              "versionType": "git"
            },
            {
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        },
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
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            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.39",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
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                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: chacha20poly1305 - validate poly1305 template argument\n\nchachapoly_create() still accepts the compatibility poly1305 parameter\nin the template name, but it assumes the second template argument is\nalways present and immediately passes it to strcmp().\n\nWhen the argument is missing, crypto_attr_alg_name() returns an error\npointer. Check for that before comparing the name so malformed template\ninstantiations fail with an error instead of dereferencing the error\npointer in strcmp().\n\nThis matches the surrounding Crypto API template pattern where\ncrypto_attr_alg_name() results are validated before string-specific use."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T04:53:14.370Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0016d3c21c6ab60a20be7f565cefb5999f3adeb6"
        },
        {
          "url": "https://git.kernel.org/stable/c/e74df53b36cdc6b6b9e5488ec883d1d55624737f"
        },
        {
          "url": "https://git.kernel.org/stable/c/265b861bece38318b8e0fc8fac0643d4ef906d31"
        }
      ],
      "title": "crypto: chacha20poly1305 - validate poly1305 template argument",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64314",
    "datePublished": "2026-07-25T08:49:45.170Z",
    "dateReserved": "2026-07-19T15:36:31.779Z",
    "dateUpdated": "2026-08-17T04:53:14.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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