{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "563125a73ac30d7036ae69ca35c40500562c1de4"
            },
            {
              "fixed": "d1354873cbe3b344899c4311ac05897fd83e3f21"
            },
            {
              "fixed": "31641c682db73353e4647e40735c7f2a75ff58ef"
            },
            {
              "fixed": "c88a9fd26cee365bec932196f76175772a941cca"
            },
            {
              "fixed": "0548a13b5a145b16e4da0628b5936baf35f51b43"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "6.12.78"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.20"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23399.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnf_tables: nft_dynset: fix possible stateful expression memleak in error path\n\nIf cloning the second stateful expression in the element via GFP_ATOMIC\nfails, then the first stateful expression remains in place without being\nreleased.\n\n   unreferenced object (percpu) 0x607b97e9cab8 (size 16):\n     comm \"softirq\", pid 0, jiffies 4294931867\n     hex dump (first 16 bytes on cpu 3):\n       00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00\n     backtrace (crc 0):\n       pcpu_alloc_noprof+0x453/0xd80\n       nft_counter_clone+0x9c/0x190 [nf_tables]\n       nft_expr_clone+0x8f/0x1b0 [nf_tables]\n       nft_dynset_new+0x2cb/0x5f0 [nf_tables]\n       nft_rhash_update+0x236/0x11c0 [nf_tables]\n       nft_dynset_eval+0x11f/0x670 [nf_tables]\n       nft_do_chain+0x253/0x1700 [nf_tables]\n       nft_do_chain_ipv4+0x18d/0x270 [nf_tables]\n       nf_hook_slow+0xaa/0x1e0\n       ip_local_deliver+0x209/0x330",
  "id": "CVE-2026-23399",
  "modified": "2026-04-01T23:09:10.421762555Z",
  "published": "2026-03-28T07:16:09.888Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0548a13b5a145b16e4da0628b5936baf35f51b43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/31641c682db73353e4647e40735c7f2a75ff58ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c88a9fd26cee365bec932196f76175772a941cca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d1354873cbe3b344899c4311ac05897fd83e3f21"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23399.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23399"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "nf_tables: nft_dynset: fix possible stateful expression memleak in error path"
}