{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  s390/zcrypt: Improve CCA CPRB length and overflow checks  The xcrb_msg_to_type6cprb_msgx() function lacks proper input validation, creating security vulnerabilities: 1. Integer overflow after CEIL4 alignment: Signed int variables could    overflow during 4-byte boundary alignment, causing undersized    buffer allocations or incorrect bounds checking. 2. Missing minimum size validation: The CPRBX structure is copied from    userspace without verifying sufficient buffer length. Undersized    buffers cause uninitialized memory access when reading structure    fields like cprbx.cprb_len and cprbx.domain. 3. Arithmetic overflow in sum calculations: Adding control block and    data block sizes could overflow, bypassing size checks and enabling    buffer overflows.  Fix by using size_t for length calculations, adding U32_MAX boundary checks after alignment, validating minimum control block size before copying from userspace, and detecting sum calculation overflows.",
  "id": "DEBIAN-CVE-2026-80546",
  "modified": "2026-09-14T16:47:44.794769327Z",
  "published": "2026-08-26T15:17:08.977Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-80546"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-80546"
  ]
}