{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.10-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  futex: Fix private hash use-after-free on resize  poll_state_synchronize_rcu(mm-\u003efutex.phash.batches) is used by futex_ref_drop() to check that a grace period has passed since the current hash was published. This relies on batches referencing a grace period which started after the hash pointer was assigned.  __futex_pivot_hash() sets mmph-\u003ebatches before it replaces mmph-\u003ehash:      scoped_guard(rcu) {             mmph-\u003ebatches = get_state_synchronize_rcu();             rcu_assign_pointer(mmph-\u003ehash, new);     }  The scoped_guard(rcu) doesn't stop new grace periods from starting, and if one starts between those two assignments, futex_ref_drop() can move forward while a reader still holds a pointer to the old hash.  Fix things by setting mmph-\u003ebatches after assigning mmph-\u003ehash.  The scoped_guard(rcu) isn't needed, so let's drop that as well.",
  "id": "DEBIAN-CVE-2026-98788",
  "modified": "2026-10-19T04:47:33.593369025Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98788"
    }
  ],
  "upstream": [
    "CVE-2026-98788"
  ]
}