{
  "cveId": "CVE-2026-74749",
  "url": "https://patchblox.com/security/cve/CVE-2026-74749",
  "summary": "CVE-2026-74749 is fixed in linux on 1 platform by DEBIAN-CVE-2026-74749 (version 7.1.10-1), released September 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  rseq: Prevent hard lockup on granted time slice...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  rseq: Prevent hard lockup on granted time slice extension  __exit_to_user_mode_loop() invokes rseq_grant_timeslice_extension() with interrupts enabled. If the extension is granted it invokes hrtimer_rearm_deferred_tif() to ensure that a pending deferred hrtimer rearm is handled before exiting to user space.  Though this invokes __hrtimer_rearm_deferred() which expects to be invoked with interrupts disabled as it takes hrtimer_cpu_base::lock with raw_spin_lock(). That\u0027s a livelock waiting to happen and caught by lockdep:      WARNING: ./include/linux/hrtimer_rearm.h:17 at irqentry_exit, CPU#1: slice_test     WARNING: inconsistent lock state     inconsistent {IN-HARDIRQ-W} -\u003E {HARDIRQ-ON-W} usage.  Prevent this by disabling interrupts around the invocation of hrtimer_rearm_deferred_tif() in rseq_grant_timeslice_extension().  [ tglx: Massaged change log ]",
  "published": "2026-08-26T15:16:53Z",
  "severity": "",
  "epss": 0.00198,
  "epssPercentile": 0.09581,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.1.10-1",
      "fix": "DEBIAN-CVE-2026-74749",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-74749",
      "released": "2026-09-04T01:46:23Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}