{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-43090",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-43090"
  ],
  "published": "2026-05-06T07:41:37Z",
  "summary": "xfrm: fix refcount leak in xfrm_migrate_policy_find",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: fix refcount leak in xfrm_migrate_policy_find\n\nsyzkaller reported a memory leak in xfrm_policy_alloc:\n\n  BUG: memory leak\n  unreferenced object 0xffff888114d79000 (size 1024):\n    comm \"syz.1.17\", pid 931\n    ...\n    xfrm_policy_alloc+0xb3/0x4b0 net/xfrm/xfrm_policy.c:432\n\nThe root cause is a double call to xfrm_pol_hold_rcu() in\nxfrm_migrate_policy_find(). The lookup function already returns\na policy with held reference, making the second call redundant.\n\nRemove the redundant xfrm_pol_hold_rcu() call to fix the refcount\nimbalance and prevent the memory leak.\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller.",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43090"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/21e235a36cfb6d145cefb10728f12f5dc5412f54"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/836ee1b0426ea3db31531e9581cc32f513d24e32"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/70c2a89a3bc207c3bfbf6f21bb439809e0a4a27a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/83317cce60a032c49480dcdabe146435bd689d03"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}