{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "317460317a02a1af512697e6e964298dedd8a163"
            },
            {
              "fixed": "36b1d997866f6083d33934983aa2ce0a184ed642"
            },
            {
              "fixed": "80b89d0226a05e8b67969de99c31b51fcd54f76a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "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-2026-74354.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Take mmap_lock in zap_pages()\n\nzap_vma_range() requires the owning mm's mmap_lock to be held.\n\nTaking mmap_read_lock under arena-\u003elock would AB-BA against\narena_vm_close() and arena_map_mmap(), both of which run with\nmmap_write_lock held and then acquire arena-\u003elock. Instead drop\narena-\u003elock, mmget_not_zero() the vma's mm, take mmap_read_lock, and\nre-resolve the vma via find_vma() since it may have been unmapped or\nreplaced while waiting.\n\nTrack processed vmls with a per-call generation in vml-\u003ezap_gen and\nserialize zap_pages() callers with a new arena-\u003ezap_mutex so\nconcurrent callers on different uaddr ranges do not mark each other's\nvmls processed before the zap is done.",
  "id": "CVE-2026-74354",
  "modified": "2026-08-16T03:31:03.115320181Z",
  "published": "2026-08-15T05:58:40.067Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36b1d997866f6083d33934983aa2ce0a184ed642"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80b89d0226a05e8b67969de99c31b51fcd54f76a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74354.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74354"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "bpf: Take mmap_lock in zap_pages()"
}