CVE-2023-52633

Medium

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.

Package Linux Kernel
Published 2024-04-02
Last modified 2025-03-17
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.0

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

Weakness type

CWE-787

CVE-2023-52633 is a Out-of-bounds Write vulnerability

What is Out-of-bounds Write?

The product writes data past the end or before the beginning of the intended buffer. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-52633 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

5 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2023-52633?

    CVE-2023-52633 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.0 out of 10 , classified as an Out-of-bounds Write flaw (CWE-787) . CVE-2023-52633 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-52633?

    CVE-2023-52633 has a CVSS score of 5.0 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-52633?

    No patch is currently available for CVE-2023-52633. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2023-52633 actively exploited?

    No — CVE-2023-52633 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Out-of-bounds Write (CWE-787)?

    The product writes data past the end or before the beginning of the intended buffer. View CWE-787 on MITRE CWE →

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