rhsa-2010_0907
Vulnerability from csaf_redhat
Published
2010-11-23 15:18
Modified
2024-11-22 03:30
Summary
Red Hat Security Advisory: kernel security and bug fix update

Notes

Topic
Updated kernel packages that fix one security issue and four bugs are now available for Red Hat Enterprise Linux 5.4 Extended Update Support. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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 issue: * Buffer overflow flaws were found in the Linux kernel's implementation of the server-side External Data Representation (XDR) for the Network File System (NFS) version 4. An attacker on the local network could send a specially-crafted large compound request to the NFSv4 server, which could possibly result in a kernel panic (denial of service) or, potentially, code execution. (CVE-2010-2521, Important) This update also fixes the following bugs: * A race condition existed when generating new process IDs with the result that the wrong process could have been signaled or killed accidentally, leading to various application faults. This update detects and disallows the reuse of PID numbers. (BZ#638865) * In a two node cluster, moving 100 files between two folders using the lock master was nearly instantaneous. However, not using the lock master resulted in considerably worse performance on both GFS1 (Global File System 1) and GFS2 (Global File System 2) file systems. With this update, not using the lock master does not lead to worsened performance on either of the aforementioned file systems. (BZ#639071) * The device naming changed after additional devices were added to the system and caused various problems. With this update, device naming remains constant after adding any additional devices. (BZ#646764) * On some bnx2-based devices, frames could drop unexpectedly. This was shown by the increasing "rx_fw_discards" values in the "ethtool --statistics" output. With this update, frames are no longer dropped and all bnx2-based devices work as expected. (BZ#649254) Users should 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": "Updated kernel packages that fix one security issue and four bugs are now\navailable for Red Hat Enterprise Linux 5.4 Extended Update Support.\n\nThe Red Hat Security Response Team has rated this update as having\nimportant security impact. A Common Vulnerability Scoring System (CVSS)\nbase score, which gives a detailed severity rating, is available from the\nCVE link in the References section.",
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        "text": "The kernel packages contain the Linux kernel, the core of any Linux\noperating system.\n\nThis update fixes the following security issue:\n\n* Buffer overflow flaws were found in the Linux kernel\u0027s implementation of\nthe server-side External Data Representation (XDR) for the Network File\nSystem (NFS) version 4. An attacker on the local network could send a\nspecially-crafted large compound request to the NFSv4 server, which could\npossibly result in a kernel panic (denial of service) or, potentially, code\nexecution. (CVE-2010-2521, Important)\n\nThis update also fixes the following bugs:\n\n* A race condition existed when generating new process IDs with the result\nthat the wrong process could have been signaled or killed accidentally,\nleading to various application faults. This update detects and disallows\nthe reuse of PID numbers. (BZ#638865)\n\n* In a two node cluster, moving 100 files between two folders using the\nlock master was nearly instantaneous. However, not using the lock master\nresulted in considerably worse performance on both GFS1 (Global File System\n1) and GFS2 (Global File System 2) file systems. With this update, not\nusing the lock master does not lead to worsened performance on either of\nthe aforementioned file systems. (BZ#639071)\n\n* The device naming changed after additional devices were added to the\nsystem and caused various problems. With this update, device naming remains\nconstant after adding any additional devices. (BZ#646764)\n\n* On some bnx2-based devices, frames could drop unexpectedly. This was\nshown by the increasing \"rx_fw_discards\" values in the \"ethtool\n--statistics\" output. With this update, frames are no longer dropped and\nall bnx2-based devices work as expected. (BZ#649254)\n\nUsers should upgrade to these updated packages, which contain backported\npatches to correct these issues. The system must be rebooted for this\nupdate to take effect.",
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          "title": "Statement"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kernel: nfsd4: bug in read_buf"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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