{
  "affected": [
    {
      "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:  ARM: 9481/2: breakpoint: CFI breakpoints only on demand  This removes the stub hw_breakpoint_cfi_handler() from ARM, making it not steal breakpoint type 0x03 (ARM_ENTRY_CFI_BREAKPOINT) unless CFI is actively used in the kernel.  When not instrumenting with CFI, or when a breakpoint is issued in userspace, we fall through to return 1 from hw_breakpoint_pending() \"unhandled fault\" so userspace can make use of this breakpoint.  Tested with LKDTM and this command line: echo CFI_FORWARD_PROTO \u003e /sys/kernel/debug/provoke-crash/DIRECT still works as expected.",
  "id": "DEBIAN-CVE-2026-90306",
  "modified": "2026-09-18T04:47:39.402878429Z",
  "published": "2026-09-17T17:17:28.263Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-90306"
    }
  ],
  "upstream": [
    "CVE-2026-90306"
  ]
}