CVE-2023-53815 in Kernel
Zusammenfassung (Englisch)
In the Linux kernel, the following vulnerability has been resolved:
posix-timers: Prevent RT livelock in itimer_delete()
itimer_delete() has a retry loop when the timer is concurrently expired. On
non-RT kernels this just spin-waits until the timer callback has completed,
except for posix CPU timers which have HAVE_POSIX_CPU_TIMERS_TASK_WORK
enabled.
In that case and on RT kernels the existing task could live lock when
preempting the task which does the timer delivery.
Replace spin_unlock() with an invocation of timer_wait_running() to handle
it the same way as the other retry loops in the posix timer code.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Zuständig
Linux
Reservieren
09.12.2025
Veröffentlichung
09.12.2025
Status
Bestätigt
Einträge
VulDB provides additional information and datapoints for this CVE:
| ID | Schwachstelle | CWE | Aus | Mas | CVE |
|---|---|---|---|---|---|
| 335079 | Linux Kernel itimer_delete Denial of Service | 835 | Nicht definiert | Offizieller Fix | CVE-2023-53815 |