GHSA-4RX4-73JX-C5R8

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-08-19 12:32
VLAI
Details

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

crypto: ccp - copy IV using skcipher ivsize

AF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver.

ccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller's IV buffer while RFC3686 skciphers expose an 8-byte IV, so the restore overruns the provided buffer.

Use crypto_skcipher_ivsize() to copy only the algorithm's IV length.

Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-53016"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787",
      "CWE-805"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:12Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: ccp - copy IV using skcipher ivsize\n\nAF_ALG rfc3686-ctr-aes-ccp requests pass an 8-byte IV to the driver.\n\nccp_aes_complete() restores AES_BLOCK_SIZE bytes into the caller\u0027s IV\nbuffer while RFC3686 skciphers expose an 8-byte IV, so the restore\noverruns the provided buffer.\n\nUse crypto_skcipher_ivsize() to copy only the algorithm\u0027s IV length.",
  "id": "GHSA-4rx4-73jx-c5r8",
  "modified": "2026-08-19T12:32:20Z",
  "published": "2026-06-24T18:32:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53016"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53016.json"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492269"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-53016"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:56574"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:55765"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:55764"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:39494"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2026:38491"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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