rhsa-2018_0412
Vulnerability from csaf_redhat
Published
2018-03-06 21:41
Modified
2024-11-14 23:40
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update

Notes

Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * Kernel: KVM: MMU potential stack buffer overrun during page walks (CVE-2017-12188, Important) * Kernel: KVM: debug exception via syscall emulation (CVE-2017-7518, Moderate) Bug Fix(es): * The kernel-rt packages have been upgraded to the 3.10.0-693.21.1 source tree, which provides a number of bug fixes over the previous version. (BZ#1537671)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


To clipboard 

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          "text": "A flaw was found in the way the Linux 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.",
          "title": "Vulnerability description"
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          "text": "Kernel: KVM: debug exception via syscall emulation",
          "title": "Vulnerability summary"
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          "category": "other",
          "text": "This issue does not affect the versions of the kernel package as shipped with\nRed Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG 2.\n\nThis issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 7. Future kernel updates for Red Hat Enterprise Linux 7\nmay address this issue.",
          "title": "Statement"
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        {
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "details": "Moderate"
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      ],
      "title": "kernel: improper keyrings creation"
    }
  ]
}


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