{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e624d4ed4aa8cc3c69d1359b0aaea539203ed266"
            },
            {
              "fixed": "4a3d0fe30b907ff324b1b49756f7e713d67f3645"
            },
            {
              "fixed": "b089aa6e94d7a08e74d076a0fe274842dc9feccc"
            },
            {
              "fixed": "571a05ea1baaccc0dc1e0d227b2cbc978b96d392"
            },
            {
              "fixed": "cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a"
            },
            {
              "fixed": "d4c4bd231ebad70e6f30db429e9640bf378b2f52"
            },
            {
              "fixed": "7027e705062482a8cea43a1c13ede3c35653966f"
            },
            {
              "fixed": "8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.14.0"
            },
            {
              "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-2026-53096.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path\n\nThe DEVMAP_HASH branch in dev_map_redirect_multi() uses\nhlist_for_each_entry_safe() to iterate hash buckets, but this function\nruns under RCU protection (called from xdp_do_generic_redirect_map()\nin softirq context). Concurrent writers (__dev_map_hash_update_elem,\ndev_map_hash_delete_elem) modify the list using RCU primitives\n(hlist_add_head_rcu, hlist_del_rcu).\n\nhlist_for_each_entry_safe() performs plain pointer dereferences without\nrcu_dereference(), missing the acquire barrier needed to pair with\nwriters' rcu_assign_pointer(). On weakly-ordered architectures (ARM64,\nPOWER), a reader can observe a partially-constructed node. It also\ndefeats CONFIG_PROVE_RCU lockdep validation and KCSAN data-race\ndetection.\n\nReplace with hlist_for_each_entry_rcu() using rcu_read_lock_bh_held()\nas the lockdep condition, consistent with the rcu_dereference_check()\nused in the DEVMAP (non-hash) branch of the same functions. Also fix\nthe same incorrect lockdep_is_held(\u0026dtab-\u003eindex_lock) condition in\ndev_map_enqueue_multi(), where the lock is not held either.",
  "id": "CVE-2026-53096",
  "modified": "2026-07-08T05:36:15.562138857Z",
  "published": "2026-06-24T16:30:34.477Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a3d0fe30b907ff324b1b49756f7e713d67f3645"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/571a05ea1baaccc0dc1e0d227b2cbc978b96d392"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7027e705062482a8cea43a1c13ede3c35653966f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8ed82f807bb09d2c8455aaa665f2c6cb17bc6a19"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b089aa6e94d7a08e74d076a0fe274842dc9feccc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb2c1f3cf65b855548e1b8d55a08bfbaa5a0901a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4c4bd231ebad70e6f30db429e9640bf378b2f52"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53096.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53096"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bpf: Use RCU-safe iteration in dev_map_redirect_multi() SKB path"
}