{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.7-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  pseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()  commit 6d3789d347a7 (\"papr-hvpipe: convert papr_hvpipe_dev_create_handle() to FD_PREPARE()\"), changed the create handle to FD_PREPARE(), but it caused kernel null-ptr-deref because after call to retain_and_null_ptr(src_info), src_info is re-used for adding it to the global list.  Getting the following kernel panic in papr_hvpipe_dev_create_handle() when trying to add src_info to the list.  Kernel attempted to write user page (0) - exploit attempt? (uid: 0)  BUG: Kernel NULL pointer dereference on write at 0x00000000  Faulting instruction address: 0xc0000000001b44a0  Oops: Kernel access of bad area, sig: 11 [#1]  ...  Call Trace:  papr_hvpipe_dev_ioctl+0x1f4/0x48c (unreliable)  sys_ioctl+0x528/0x1064  system_call_exception+0x128/0x360  system_call_vectored_common+0x15c/0x2ec  Now, the error handling with FD_PREPARE's file cleanup and __free(kfree) auto cleanup is getting too convoluted. This is mainly because we need to ensure only 1 user get the srcID handle. To simplify this, we allocate prepare the src_info in the beginning and add it to the global list under a spinlock after checking that no duplicates exist.  This simplify the error handling where if the FD_ADD fails, we can simply remove the src_info from the list and consume any pending msg in hvpipe to be cleared, after src_info became visible in the global list.",
  "id": "DEBIAN-CVE-2026-46118",
  "modified": "2026-09-14T16:47:48.747171739Z",
  "published": "2026-05-28T10:16:27.293Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-46118"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-46118"
  ]
}