{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.19.11-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  futex: Fix UaF between futex_key_to_node_opt() and vma_replace_policy()  During futex_key_to_node_opt() execution, vma-\u003evm_policy is read under speculative mmap lock and RCU. Concurrently, mbind() may call vma_replace_policy() which frees the old mempolicy immediately via kmem_cache_free().  This creates a race where __futex_key_to_node() dereferences a freed mempolicy pointer, causing a use-after-free read of mpol-\u003emode.  [  151.412631] BUG: KASAN: slab-use-after-free in __futex_key_to_node (kernel/futex/core.c:349) [  151.414046] Read of size 2 at addr ffff888001c49634 by task e/87  [  151.415969] Call Trace:  [  151.416732]  __asan_load2 (mm/kasan/generic.c:271) [  151.416777]  __futex_key_to_node (kernel/futex/core.c:349) [  151.416822]  get_futex_key (kernel/futex/core.c:374 kernel/futex/core.c:386 kernel/futex/core.c:593)  Fix by adding rcu to __mpol_put().",
  "id": "DEBIAN-CVE-2026-23415",
  "modified": "2026-04-28T19:53:28.724983568Z",
  "published": "2026-04-02T12:16:20.810Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-23415"
    }
  ],
  "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-2026-23415"
  ]
}