CVE-2023-52633

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.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.3 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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
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

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-04-02 07:15

Updated : 2025-03-17 15:17

NVD link : CVE-2023-52633

Mitre link : CVE-2023-52633

CVE.ORG link : CVE-2023-52633

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-787

Out-of-bounds Write

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