{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.9-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  sched_ext: Take cgroup_lock() first in scx_cgroup_lock()  scx_cgroup_lock() write-locks scx_cgroup_ops_rwsem and then takes cgroup_lock(), which can deadlock through kernfs:    scx enable/disable         cgroup rmdir           cpu.weight write   ------------------         ------------           ----------------                              cgroup_lock()   percpu_down_write(rwsem)   cgroup_lock()                                                     kernfs_get_active()                                                     percpu_down_read(rwsem)                              kernfs_drain()  The enable path waits for the rmdir to release cgroup_mutex. The rmdir, deactivating the cpu controller's files, waits in kernfs_drain() for the write's active reference. The write, in scx_group_set_weight(), waits for the rwsem behind the pending writer.  Take cgroup_lock() first. The set_* paths take no cgroup locks inside the read side, so a pending write-lock then only waits for read sections that always run to completion, and no dependency from the rwsem back to cgroup_mutex remains.",
  "id": "DEBIAN-CVE-2026-74593",
  "modified": "2026-09-14T16:47:49.395141424Z",
  "published": "2026-08-22T16:16:31.573Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-74593"
    }
  ],
  "upstream": [
    "CVE-2026-74593"
  ]
}