{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "4c046ca4e35a83ea32f6e748f54139f5fe2a1d01"
            },
            {
              "fixed": "ab63ccefb9c71627f957a0724c2b9ebc869c6f20"
            },
            {
              "fixed": "c6f539311e58e76aa96feef0f1572b13a564f8a2"
            },
            {
              "fixed": "2664f537ca5bcb2ef3fac2683dcca602e51fad24"
            },
            {
              "fixed": "7436da6c1bc44654b7f11a17e746f6999fd37250"
            },
            {
              "fixed": "6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322"
            },
            {
              "fixed": "b6183b1b88a722b6d8ea0cecc99eba168a15e0be"
            },
            {
              "fixed": "a622d2e9608c9dff47fc2e5759ac7aa3a836b45d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64411.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ebtables: terminate table name before find_table_lock()\n\nupdate_counters() and compat_update_counters() forward a user-supplied\n32-byte table name to find_table_lock() without NUL-terminating it. On a\nlookup miss, find_inlist_lock() calls try_then_request_module(..., \"%s%s\",\n\"ebtable_\", name), and vsnprintf() reads past the name field and the\nstack object until it hits a zero byte.\n\n  BUG: KASAN: stack-out-of-bounds in string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n  Read of size 1 at addr ffff8880119dfb20 by task exploit/147\n  Call Trace:\n  ...\n   string (lib/vsprintf.c:648 lib/vsprintf.c:730)\n   vsnprintf (lib/vsprintf.c:2945)\n   __request_module (kernel/module/kmod.c:150)\n   do_update_counters.isra.0 (net/bridge/netfilter/ebtables.c:371 net/bridge/netfilter/ebtables.c:380)\n   update_counters (net/bridge/netfilter/ebtables.c:1440)\n   do_ebt_set_ctl (net/bridge/netfilter/ebtables.c:2573)\n   nf_setsockopt (net/netfilter/nf_sockopt.c:101)\n   ip_setsockopt (net/ipv4/ip_sockglue.c:1424)\n   raw_setsockopt (net/ipv4/raw.c:847)\n   __sys_setsockopt (net/socket.c:2393)\n  ...\n\ncompat_do_replace() shares the same unterminated name via\ncompat_copy_ebt_replace_from_user(); terminate it there too so all\nfind_table_lock() callers behave alike. The other callers already\nterminate the name after the copy.",
  "id": "CVE-2026-64411",
  "modified": "2026-07-28T03:55:48.522309141Z",
  "published": "2026-07-25T08:50:52.143Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2664f537ca5bcb2ef3fac2683dcca602e51fad24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c046ca4e35a83ea32f6e748f54139f5fe2a1d01"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fe8d3cecd20bfaaaf440db3a06ba674d2f2e322"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7436da6c1bc44654b7f11a17e746f6999fd37250"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a622d2e9608c9dff47fc2e5759ac7aa3a836b45d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab63ccefb9c71627f957a0724c2b9ebc869c6f20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6183b1b88a722b6d8ea0cecc99eba168a15e0be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6f539311e58e76aa96feef0f1572b13a564f8a2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64411.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64411"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfilter: ebtables: terminate table name before find_table_lock()"
}