{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  KVM: s390: Fix length check __import_wp_info()  struct kvm_hw_breakpoint::len is a __u64 that is fully controlled by user space. This is then assigned to wp_info-\u003elen, which is an int. The bounds check is done on the truncated value while the allocation uses the untruncated one:  \twp_info-\u003elen = bp_data-\u003elen; \t[...] \tif (wp_info-\u003elen \u003c 0 || wp_info-\u003elen \u003e MAX_WP_SIZE) \t\treturn -EINVAL;  \twp_info-\u003eold_data = kmalloc(bp_data-\u003elen, GFP_KERNEL_ACCOUNT);  Use the validated value for the allocation as intended. Without this fix userspace can trigger \u003e4GB allocations which will fail and result in a WARN due to MAX_PAGE_ORDER.",
  "id": "DEBIAN-CVE-2026-89926",
  "modified": "2026-09-17T04:47:37.081992189Z",
  "published": "2026-09-16T11:17:01.777Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-89926"
    }
  ],
  "upstream": [
    "CVE-2026-89926"
  ]
}