cve-2023-52633
Vulnerability from cvelistv5
Published
2024-04-02 06:49
Modified
2024-12-19 08:23
Severity ?
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

To clipboard 

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