netdevsim: fix a race issue related to the operation on bpf_bound_progs list

{
  "id": "deb47bd1476f69c734bc0facbf18cfe74c43633d03fa3dff4383d6254bc9085f",
  "url": "https://osv.dev/vulnerability/CVE-2026-23126",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "netdevsim: fix a race issue related to the operation on bpf_bound_progs list",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: netdevsim: fix a race issue related to the operation on bpf_bound_progs list The netdevsim driver lacks a protection mechanism for operations on the bpf_bound_progs list. When the nsim_bpf_create_prog() performs list_add_tail, it is possible that nsim_bpf_destroy_prog() is simultaneously performs list_del. Concurrent operations on the list may lead to list corruption and trigger a kernel crash as follows: [ 417.290971] kernel BUG at lib/list_debug.c:62! [ 417.290983] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 417.290992] CPU: 10 PID: 168 Comm: kworker/10:1 Kdump: loaded Not tainted 6.19.0-rc5 #1 [ 417.291003] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 417.291007] Workqueue: events bpf_prog_free_deferred [ 417.291021] RIP: 0010:__list_del_entry_valid_or_report+0xa7/0xc0 [ 417.291034] Code: a8 ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 48 a1 eb ae e8 ed fb a8 ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 80 a1 eb ae e8 d9 fb a8 ff <0f> 0b 48 89 d1 48 c7 c7 d0 a1 eb ae 48 89 f2 48 89 c6 e8 c2 fb a8 [ 417.291040] RSP: 0018:ffffb16a40807df8 EFLAGS: 00010246 [ 417.291046] RAX: 000000000000006d RBX: ffff8e589866f500 RCX: 0000000000000000 [ 417.291051] RDX: 0000000000000000 RSI: ffff8e59f7b23180 RDI: ffff8e59f7b23180 [ 417.291055] RBP: ffffb16a412c9000 R08: 0000000000000000 R09: 0000000000000003 [ 417.291059] R10: ffffb16a40807c80 R11: ffffffffaf9edce8 R12: ffff8e594427ac20 [ 417.2",
    "evidence": "osv:CVE-2026-23126",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.162",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.122",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.68",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-23126",
      "aliases": [
        "CVE-2026-23126"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "31d3ad832948c75139b0e5b653912f7898a1d5d5"
                },
                {
                  "fixed": "3f560cfc7706029294132482fff5d1bc7884b70d"
                },
                {
                  "fixed": "f1f9cfd2f46a73b7de2982d01be822eac3a0efaa"
                },
                {
                  "fixed": "d77379ca82efcb2fe563359cc795027d680410db"
                },
                {
                  "fixed": "68462ecc40ea8f780fb3c74ebfddd05506bb731b"
                },
                {
                  "fixed": "b97d5eedf4976cc94321243be83b39efe81a0e15"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23126.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.16.0"
                },
                {
                  "fixed": "6.1.162"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.122"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.68"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.8"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23126.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.842569147Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3f560cfc7706029294132482fff5d1bc7884b70d",
        "https://git.kernel.org/stable/c/68462ecc40ea8f780fb3c74ebfddd05506bb731b",
        "https://git.kernel.org/stable/c/b97d5eedf4976cc94321243be83b39efe81a0e15",
        "https://git.kernel.org/stable/c/d77379ca82efcb2fe563359cc795027d680410db",
        "https://git.kernel.org/stable/c/f1f9cfd2f46a73b7de2982d01be822eac3a0efaa",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23126.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-23126",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23126.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-23126",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518508,
  "published_at": "2026-02-14T15:09:55.552+00:00"
}