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CVE-2023-52633 (GCVE-0-2023-52633)

Vulnerability from cvelistv5 – Published: 2024-04-02 06:49 – Updated: 2026-05-11 19:30
VLAI
Title
um: time-travel: fix time corruption
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:53 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 065038706f77a56754e8f0c2556dab7e22dfe577 , < 0c7478a2da3f5fe106b4658338873d50c86ac7ab (git)
Affected: 065038706f77a56754e8f0c2556dab7e22dfe577 , < 4f7dad73df4cdb2b7042103d3922745d040ad025 (git)
Affected: 065038706f77a56754e8f0c2556dab7e22dfe577 , < de3e9d8e8d1ae0a4d301109d1ec140796901306c (git)
Affected: 065038706f77a56754e8f0c2556dab7e22dfe577 , < b427f55e9d4185f6f17cc1e3296eb8d0c4425283 (git)
Affected: 065038706f77a56754e8f0c2556dab7e22dfe577 , < abe4eaa8618bb36c2b33e9cdde0499296a23448c (git)
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Linux Linux Affected: 5.3
Unaffected: 0 , < 5.3 (semver)
Unaffected: 5.15.149 , ≤ 5.15.* (semver)
Unaffected: 6.1.77 , ≤ 6.1.* (semver)
Unaffected: 6.6.16 , ≤ 6.6.* (semver)
Unaffected: 6.7.4 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.