CVE - CVE-2023-52633

CVE-ID
CVE-2023-52633	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab URL:https://git.kernel.org/stable/c/0c7478a2da3f5fe106b4658338873d50c86ac7ab MISC:https://git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025 URL:https://git.kernel.org/stable/c/4f7dad73df4cdb2b7042103d3922745d040ad025 MISC:https://git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c URL:https://git.kernel.org/stable/c/abe4eaa8618bb36c2b33e9cdde0499296a23448c MISC:https://git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283 URL:https://git.kernel.org/stable/c/b427f55e9d4185f6f17cc1e3296eb8d0c4425283 MISC:https://git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c URL:https://git.kernel.org/stable/c/de3e9d8e8d1ae0a4d301109d1ec140796901306c
Assigning CNA
kernel.org
Date Record Created
20240306	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240306)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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