{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "879af96ffd72706c6e3278ea6b45b0b0e37ec5d7"
            },
            {
              "fixed": "3128b294b426533c8d9162187446d93a8a160359"
            },
            {
              "fixed": "acbf45bd584d924b320bee2a7fe2a26f64904d95"
            },
            {
              "fixed": "866d3d9b87751b1944168fd82615505e0c0fd6cf"
            },
            {
              "fixed": "183128da0406b1c10e6f60b7b9fe70788b9c8c1d"
            },
            {
              "fixed": "7bad93e99737e4a5c0c14ac50c05152cf4e28022"
            },
            {
              "fixed": "ea690b3b6e58ae00979af8195b4cc24df466b65e"
            },
            {
              "fixed": "1921f91298d1388a0bb9db8f83800c998b649cb3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.15.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.141"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.91"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.33"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53069.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet, bpf: fix null-ptr-deref in xdp_master_redirect() for down master\n\nsyzkaller reported a kernel panic in bond_rr_gen_slave_id() reached via\nxdp_master_redirect(). Full decoded trace:\n\n  https://syzkaller.appspot.com/bug?extid=80e046b8da2820b6ba73\n\nbond_rr_gen_slave_id() dereferences bond-\u003err_tx_counter, a per-CPU\ncounter that bonding only allocates in bond_open() when the mode is\nround-robin. If the bond device was never brought up, rr_tx_counter\nstays NULL.\n\nThe XDP redirect path can still reach that code on a bond that was\nnever opened: bpf_master_redirect_enabled_key is a global static key,\nso as soon as any bond device has native XDP attached, the\nXDP_TX -\u003e xdp_master_redirect() interception is enabled for every\nslave system-wide. The path xdp_master_redirect() -\u003e\nbond_xdp_get_xmit_slave() -\u003e bond_xdp_xmit_roundrobin_slave_get() -\u003e\nbond_rr_gen_slave_id() then runs against a bond that has no\nrr_tx_counter and crashes.\n\nFix this in the generic xdp_master_redirect() by refusing to call into\nthe master's -\u003endo_xdp_get_xmit_slave() when the master device is not\nup. IFF_UP is only set after -\u003endo_open() has successfully returned,\nso this reliably excludes masters whose XDP state has not been fully\ninitialized. Drop the frame with XDP_ABORTED so the exception is\nvisible via trace_xdp_exception() rather than silently falling through.\nThis is not specific to bonding: any current or future master that\ndefers XDP state allocation to -\u003endo_open() is protected.",
  "id": "CVE-2026-53069",
  "modified": "2026-07-16T03:31:17.755500893Z",
  "published": "2026-06-24T16:30:10.930Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/183128da0406b1c10e6f60b7b9fe70788b9c8c1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1921f91298d1388a0bb9db8f83800c998b649cb3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3128b294b426533c8d9162187446d93a8a160359"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bad93e99737e4a5c0c14ac50c05152cf4e28022"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/866d3d9b87751b1944168fd82615505e0c0fd6cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acbf45bd584d924b320bee2a7fe2a26f64904d95"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea690b3b6e58ae00979af8195b4cc24df466b65e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53069.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53069"
    },
    {
      "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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master"
}