rhsa-2011_0836
Vulnerability from csaf_redhat
Published
2011-06-01 19:55
Modified
2024-11-05 17:31
Summary
Red Hat Security Advisory: kernel security and bug fix update

Notes

Topic
Updated kernel packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise Linux 6. 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 packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * An integer underflow flaw, leading to a buffer overflow, was found in the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation. This could allow a remote attacker to cause a denial of service. (CVE-2011-1770, Important) * Missing sanity checks were found in setup_arg_pages() in the Linux kernel. When making the size of the argument and environment area on the stack very large, it could trigger a BUG_ON(), resulting in a local denial of service. (CVE-2010-3858, Moderate) * A missing validation check was found in the bcm_release() and raw_release() functions in the Linux kernel's Controller Area Network (CAN) implementation. This could allow a local, unprivileged user to cause a denial of service. (CVE-2011-1598, CVE-2011-1748, Moderate) * The fix for Red Hat Bugzilla bug 656461, as provided in RHSA-2011:0542, introduced a regression in the cifs_close() function in the Linux kernel's Common Internet File System (CIFS) implementation. A local, unprivileged user with write access to a CIFS file system could use this flaw to cause a denial of service. (CVE-2011-1771, Moderate) Red Hat would like to thank Dan Rosenberg for reporting CVE-2011-1770; Brad Spengler for reporting CVE-2010-3858; and Oliver Hartkopp for reporting CVE-2011-1748. This update also fixes various bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References section. Users should upgrade to these updated packages, which contain backported patches to resolve these issues, and fix the bugs noted in the Technical Notes. 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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          "title": "Vulnerability description"
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          "text": "kernel: setup_arg_pages: diagnose excessive argument size",
          "title": "Vulnerability summary"
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          "category": "other",
          "text": "This issue did not affect the versions of Linux kernel as shipped with Red Hat\nEnterprise Linux 4 as they did not backport the upstream commit b6a2fea3 that introduced the issue. This was addressed in Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0004.html and \nhttps://rhn.redhat.com/errata/RHSA-2010-0958.html. Future kernel updates in Red Hat Enterprise Linux 6 may address this flaw.",
          "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.",
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          "title": "Vulnerability description"
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          "category": "summary",
          "text": "kernel: missing check in can/bcm and can/raw socket releases",
          "title": "Vulnerability summary"
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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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      "title": "kernel: missing check in can/bcm and can/raw socket releases"
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          "names": [
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      "discovery_date": "2011-04-20T00:00:00+00:00",
      "ids": [
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          "text": "698057"
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      "notes": [
        {
          "category": "description",
          "text": "The raw_release function in net/can/raw.c in the Linux kernel before 2.6.39-rc6 does not properly validate a socket data structure, which allows local users to cause a denial of service (NULL pointer dereference) or possibly have unspecified other impact via a crafted release operation.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: missing check in can/bcm and can/raw socket releases",
          "title": "Vulnerability summary"
        },
        {
          "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.",
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      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2011-1771"
        },
        {
          "category": "external",
          "summary": "RHBZ#703016",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=703016"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2011-1771",
          "url": "https://www.cve.org/CVERecord?id=CVE-2011-1771"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1771",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1771"
        }
      ],
      "release_date": "2011-04-05T00:00:00+00:00",
      "remediations": [
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          "date": "2011-06-01T19:55:00+00:00",
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            "integrityImpact": "NONE",
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: cifs oops when creating file with O_DIRECT set"
    }
  ]
}


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Sightings

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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.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.