{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "102740bd9436a3a6ba129af3a48271d794009fa5"
            },
            {
              "fixed": "a018f208ab7512380bd4cf670064d48cba00a1b1"
            },
            {
              "fixed": "33373e1f378a501bc51aa73312f74295c84e3101"
            },
            {
              "fixed": "e2d3b7bab3748c811dc5750ce9a8d62bc7f90ed7"
            },
            {
              "fixed": "4a76953c3ed043797e81529b9395e9ca6f4c7609"
            },
            {
              "fixed": "1387f252a242a51bfbb6eace29c8f8db21b457da"
            },
            {
              "fixed": "10753da2d659dd425a6e620f47f86852d604f67f"
            },
            {
              "fixed": "3fa6fb5d771c992ebedbfa7331c6bcc6f33f89b7"
            },
            {
              "fixed": "27db54b90bcc7c37867fe664107fa25ea6a116e4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "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": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74382.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: cls_bpf: prevent unbounded recursion in offload rollback\n\nQuan Sun reported [1] a stack overflow in cls_bpf_offload_cmd().\n\nReproducer on netdevsim: add a skip_sw cls_bpf filter, set the\nbpf_tc_accept debugfs knob to 0, then `tc filter replace`. The replace\ncalls tc_setup_cb_replace() which fails. cls_bpf_offload_cmd() then\nswaps prog/oldprog and recursively calls itself to roll back. But\nbpf_tc_accept=0 makes the rollback fail too, which triggers yet another\nrollback frame with the same arguments, and so on until the stack is\nexhausted.\n\nbpf_tc_accept is just a convenient knob for the reproducer. Any driver\nwhose tc_setup_cb_replace() fails twice in a row can hit the same loop,\nso this is not a netdevsim-only issue.\n\nTwo ways to fix it:\n\n  1) Have the rollback call tc_setup_cb_add() on oldprog instead of\n     re-entering cls_bpf_offload_cmd().\n  2) Mark the rollback frame with a flag and skip a second-level\n     rollback from inside it.\n\nGo with (2). It is the smaller change and keeps the original behaviour:\nthe rollback still goes through tc_setup_cb_replace(), so the driver\ngets one real chance to restore its state. If that attempt also fails,\nwe just return the original error instead of recursing.\n\n[1]: https://lore.kernel.org/bpf/ce5a6005-3c5e-4696-9e05-eba9461dc860@std.uestc.edu.cn/T/#u",
  "id": "CVE-2026-74382",
  "modified": "2026-08-16T03:31:11.542369765Z",
  "published": "2026-08-15T05:58:59.106Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10753da2d659dd425a6e620f47f86852d604f67f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1387f252a242a51bfbb6eace29c8f8db21b457da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27db54b90bcc7c37867fe664107fa25ea6a116e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33373e1f378a501bc51aa73312f74295c84e3101"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3fa6fb5d771c992ebedbfa7331c6bcc6f33f89b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a76953c3ed043797e81529b9395e9ca6f4c7609"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a018f208ab7512380bd4cf670064d48cba00a1b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e2d3b7bab3748c811dc5750ce9a8d62bc7f90ed7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74382.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74382"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net/sched: cls_bpf: prevent unbounded recursion in offload rollback"
}