5

CVE-2023-52633

um: time-travel: fix time corruption

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 5.15.149
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.77
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.16
Linux ≫ Linux Kernel Version >= 6.7 < 6.7.4
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.132
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5 1.3 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab
Patch
https://git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025
Patch
https://git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c
Patch
https://git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283
Patch
https://git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c
Patch