CVE-2023-52633
EPSS
0.04 % (16th)
Advisories
15
In the Linux kernel, the following vulnerability has been resolved:
um: time-travel: fix time corruption
In 'basic' time-travel mode (without =inf-cpu or =ext), we
still get timer interrupts. These can happen at arbitrary
points in time, i.e. while in timer_read(), which pushes
time forward just a little bit. Then, if we happen to get
the interrupt after calculating the new time to push to,
but before actually finishing that, the interrupt will set
the time to a value that's incompatible with the forward,
and we'll crash because time goes backwards when we do the
forwarding.
Fix this by reading the time_travel_time, calculating the
adjustment, and doing the adjustment all with interrupts
disabled.
- CVE Status
- PUBLISHED
- CNA
- kernel.org
- Published Date
-
2024-04-02 07:15:41
(5 months ago) - Updated Date
-
2024-04-02 12:50:42
(5 months ago)
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