rhsa-2010_0758
Vulnerability from csaf_redhat
Published
2010-10-08 02:08
Modified
2024-11-22 03:56
Summary
Red Hat Security Advisory: kernel-rt security and bug fix update

Notes

Topic
Updated kernel-rt packages that fix two security issues and three bugs are now available for Red Hat Enterprise MRG 1.2. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Details
The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * The compat_alloc_user_space() function in the Linux kernel 32/64-bit compatibility layer implementation was missing sanity checks. This function could be abused in other areas of the Linux kernel if its length argument can be controlled from user-space. On 64-bit systems, a local, unprivileged user could use this flaw to escalate their privileges. (CVE-2010-3081, Important) * A missing upper bound integer check was found in the sys_io_submit() function in the Linux kernel asynchronous I/O implementation. A local, unprivileged user could use this flaw to cause an information leak. (CVE-2010-3067, Low) Red Hat would like to thank Ben Hawkes for reporting CVE-2010-3081, and Tavis Ormandy for reporting CVE-2010-3067. This update also fixes the following bugs: * The RHSA-2010:0631 kernel-rt update resolved an issue (CVE-2010-2240) where, when an application has a stack overflow, the stack could silently overwrite another memory mapped area instead of a segmentation fault occurring. This update implements the official upstream fixes for that issue. Note: This is not a security regression. The original fix was complete. (BZ#624604) * In certain circumstances, under heavy load, certain network interface cards using the bnx2 driver, and configured to use MSI-X, could stop processing interrupts and then network connectivity would cease. (BZ#622952) * This update upgrades the tg3 driver to version 3.110. (BZ#640334) Users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect.
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.


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          "text": "kernel: do_io_submit() infoleak",
          "title": "Vulnerability summary"
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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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      "title": "kernel: do_io_submit() infoleak"
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    {
      "acknowledgments": [
        {
          "names": [
            "Ben Hawkes"
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        }
      ],
      "cve": "CVE-2010-3081",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2010-09-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "634457"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The compat_alloc_user_space functions in include/asm/compat.h files in the Linux kernel before 2.6.36-rc4-git2 on 64-bit platforms do not properly allocate the userspace memory required for the 32-bit compatibility layer, which allows local users to gain privileges by leveraging the ability of the compat_mc_getsockopt function (aka the MCAST_MSFILTER getsockopt support) to control a certain length value, related to a \"stack pointer underflow\" issue, as exploited in the wild in September 2010.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: 64-bit Compatibility Mode Stack Pointer Underflow",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "More information can be found in this kbase: https://access.redhat.com/kb/docs/DOC-40265.",
          "title": "Statement"
        },
        {
          "category": "general",
          "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.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "details": "Important"
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      ],
      "title": "kernel: 64-bit Compatibility Mode Stack Pointer Underflow"
    }
  ]
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
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