rhsa-2015_1976
Vulnerability from csaf_redhat
Published
2015-11-03 16:39
Modified
2024-11-14 16:32
Summary
Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update

Notes

Topic
Updated kernel-rt packages that fix one security issue, several bugs, and add one enhancement are now available for Red Hat Enterprise MRG 2.5. Red Hat Product Security has rated this update as having Moderate 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-rt packages contain the Linux kernel, the core of any Linux operating system. * A flaw was found in the way the Linux kernel's VFS subsystem handled file system locks. A local, unprivileged user could use this flaw to trigger a deadlock in the kernel, causing a denial of service on the system. (CVE-2014-8559, Moderate) This update provides a build of the kernel-rt package for Red Hat Enterprise MRG 2.5 that is layered on Red Hat Enterprise Linux 6, and fixes the following issues: * Unexpected completion is detected on Intel Ethernet x540 * Divide by zero error in intel_pstate_timer_func() [ inline s64 div_s64_rem() ] * NFS Recover from stateid-type error on SETATTR * pNFS RHEL 7.1 Data Server connection remains after umount due to lseg refcount leak * Race during NFS v4.0 recovery and standard IO. * Fix ip6t_SYNPROXY for namespaces and connection delay * synproxy window size and sequence number behaviour causes long connection delay * Crash in kmem_cache_alloc() during disk stress testing (using ipr) * xfs: sync/backport to upstream v4.1 * iscsi_session recovery_tmo revert back to default when a path becomes active * read from MD raid1 can fail if read from resync target fails * backport scsi-mq * unable to handle kernel paging request at 0000000000237037 [zswap] (BZ#1267373) All kernel-rt users are advised to upgrade to these updated packages, which correct these issues and add this enhancement. 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-rt packages that fix one security issue, several bugs, and\nadd one enhancement are now available for Red Hat Enterprise MRG 2.5.\n\nRed Hat Product Security has rated this update as having Moderate security\nimpact. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available from the CVE link in the\nReferences section.",
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        "text": "The kernel-rt packages contain the Linux kernel, the core of any Linux\noperating system.\n\n* A flaw was found in the way the Linux kernel\u0027s VFS subsystem handled file\nsystem locks. A local, unprivileged user could use this flaw to trigger a\ndeadlock in the kernel, causing a denial of service on the system.\n(CVE-2014-8559, Moderate)\n\nThis update provides a build of the kernel-rt package for Red Hat\nEnterprise MRG 2.5 that is layered on Red Hat Enterprise Linux 6, and fixes\nthe following issues:\n\n* Unexpected completion is detected on Intel Ethernet x540\n\n* Divide by zero error in intel_pstate_timer_func() [ inline s64\ndiv_s64_rem() ]\n\n* NFS Recover from stateid-type error on SETATTR\n\n* pNFS RHEL 7.1 Data Server connection remains after umount due to lseg\nrefcount leak\n\n* Race during NFS v4.0 recovery and standard IO.\n\n* Fix ip6t_SYNPROXY for namespaces and connection delay\n\n* synproxy window size and sequence number behaviour causes long connection\ndelay\n\n* Crash in kmem_cache_alloc() during disk stress testing (using ipr)\n\n* xfs: sync/backport to upstream v4.1\n\n* iscsi_session recovery_tmo revert back to default when a path becomes\nactive\n\n* read from MD raid1 can fail if read from resync target fails\n\n* backport scsi-mq\n\n* unable to handle kernel paging request at 0000000000237037 [zswap]\n\n(BZ#1267373)\n\nAll kernel-rt users are advised to upgrade to these updated packages, which\ncorrect these issues and add this enhancement. The system must be rebooted\nfor this update to take effect.",
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  "vulnerabilities": [
    {
      "cve": "CVE-2014-8559",
      "discovery_date": "2014-10-30T00:00:00+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "1159313"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the way the Linux kernel\u0027s VFS subsystem handled file system locks. A local, unprivileged user could use this flaw to trigger a deadlock in the kernel, causing a denial of service on the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: fs: deadlock due to incorrect usage of rename_lock",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.\n\nThis issue affects the version of the kernel package as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future kernel updates for the respective releases may address this issue.",
          "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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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2014-8559"
        },
        {
          "category": "external",
          "summary": "RHBZ#1159313",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1159313"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2014-8559",
          "url": "https://www.cve.org/CVERecord?id=CVE-2014-8559"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2014-8559",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2014-8559"
        }
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      "release_date": "2014-10-25T00:00:00+00:00",
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          "category": "vendor_fix",
          "date": "2015-11-03T16:39:30+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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            "baseScore": 4.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:H/Au:N/C:N/I:N/A:C",
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "kernel: fs: deadlock due to incorrect usage of rename_lock"
    }
  ]
}


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