CVE-2017-7518 (GCVE-0-2017-7518)

Vulnerability from cvelistv5 – Published: 2018-07-30 13:00 – Updated: 2024-08-05 16:04
VLAI
Summary
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
Severity
5.5 (Medium)
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2018:0412 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/articles/3290921 x_refsource_CONFIRM
https://usn.ubuntu.com/3619-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:0395 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3754-1/ vendor-advisoryx_refsource_UBUNTU
http://www.securitytracker.com/id/1038782 vdb-entryx_refsource_SECTRACK
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2017/06/23/5 mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3619-1/ vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2017/dsa-3981 vendor-advisoryx_refsource_DEBIAN
https://www.spinics.net/lists/kvm/msg151817.html mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/99263 vdb-entryx_refsource_BID
Impacted products
Vendor Product Version
[UNKNOWN] Kernel: Affected: 4.12
Create a notification for this product.
Date Public
2017-06-22 00:00
Show details on NVD website
To clipboard 

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      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
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    },
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  }
}


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Tags
Taxonomy of the tags.




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.