suse-su-2016:0380-1
Vulnerability from csaf_suse
Published
2016-02-08 13:45
Modified
2016-02-08 13:45
Summary
Security update for kernel live patch 3

Notes

Title of the patch
Security update for kernel live patch 3
Description of the patch
This kernel live patch for Linux Kernel 3.12.38-44.1 fixes security issues and bugs: Security issues fixed: - CVE-2015-8539: A negatively instantiated user key could have been used by a local user to leverage privileges (bnc#958601). - CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable Datagram Sockets (RDS) implementation allowing a local user to cause system DoS. A verification was missing that the underlying transport exists when a connection was created. (bsc#953052) - CVE-2015-7990: RDS: Verify the underlying transport exists before creating a connection, preventing possible DoS (bsc#953052). - CVE-2015-7872: Possible crash when trying to garbage collect an uninstantiated keyring (bsc#951542). - CVE-2015-2925: The prepend_path function in fs/dcache.c in the Linux kernel did not properly handle rename actions inside a bind mount, which allowed local users to bypass an intended container protection mechanism by renaming a directory, related to a 'double-chroot attack (bnc#951625). Non-security bugfix were also done: - xfs: Fix lost direct IO write in the last block (bsc#954005). - simple fix in kallsyms initialization (bsc#940342 bsc#916225)
Patchnames
SUSE-SLE-Live-Patching-12-2016-221
Terms of use
CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).


To clipboard 

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        "text": "\nThis kernel live patch for Linux Kernel 3.12.38-44.1 fixes security issues and bugs:\n\nSecurity issues fixed:\n- CVE-2015-8539: A negatively instantiated user key could have been used\n  by a local user to leverage privileges (bnc#958601).\n\n- CVE-2015-6937: A NULL pointer dereference flaw was found in the Reliable\n  Datagram Sockets (RDS) implementation allowing a local user to cause\n  system DoS. A verification was missing that the underlying transport\n  exists when a connection was created. (bsc#953052)\n\n- CVE-2015-7990: RDS: Verify the underlying transport exists before\n  creating a connection, preventing possible DoS (bsc#953052).\n\n- CVE-2015-7872: Possible crash when trying to garbage collect an\n  uninstantiated keyring (bsc#951542).\n\n- CVE-2015-2925: The prepend_path function in fs/dcache.c in the Linux\n  kernel did not properly handle rename actions inside a bind mount, which\n  allowed local users to bypass an intended container protection mechanism\n  by renaming a directory, related to a \u0027double-chroot attack (bnc#951625).\n\nNon-security bugfix were also done:\n- xfs: Fix lost direct IO write in the last block (bsc#954005).\n- simple fix in kallsyms initialization (bsc#940342 bsc#916225)\n  ",
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        "url": "https://lists.suse.com/pipermail/sle-security-updates/2016-February/001856.html"
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    "title": "Security update for kernel live patch 3",
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            "SUSE Linux Enterprise Live Patching 12:kgraft-patch-3_12_38-44-default-4-2.1.x86_64",
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          "text": "The __rds_conn_create function in net/rds/connection.c in the Linux kernel through 4.2.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound.",
          "title": "CVE description"
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          "text": "The key_gc_unused_keys function in security/keys/gc.c in the Linux kernel through 4.2.6 allows local users to cause a denial of service (OOPS) via crafted keyctl commands.",
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      ],
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        {
          "category": "general",
          "text": "Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937.",
          "title": "CVE description"
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          "url": "https://bugzilla.suse.com/952384"
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          "product_ids": [
            "SUSE Linux Enterprise Live Patching 12:kgraft-patch-3_12_38-44-default-4-2.1.x86_64",
            "SUSE Linux Enterprise Live Patching 12:kgraft-patch-3_12_38-44-xen-4-2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H",
            "version": "3.0"
          },
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          "details": "low"
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      "cve": "CVE-2015-8539",
      "ids": [
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          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2015-8539"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.",
          "title": "CVE description"
        }
      ],
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          "summary": "CVE-2015-8539",
          "url": "https://www.suse.com/security/cve/CVE-2015-8539"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1115893 for CVE-2015-8539",
          "url": "https://bugzilla.suse.com/1115893"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 781018 for CVE-2015-8539",
          "url": "https://bugzilla.suse.com/781018"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 958463 for CVE-2015-8539",
          "url": "https://bugzilla.suse.com/958463"
        },
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          "summary": "SUSE Bug 958601 for CVE-2015-8539",
          "url": "https://bugzilla.suse.com/958601"
        }
      ],
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Enterprise Live Patching 12:kgraft-patch-3_12_38-44-default-4-2.1.x86_64",
            "SUSE Linux Enterprise Live Patching 12:kgraft-patch-3_12_38-44-xen-4-2.1.x86_64"
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      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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          ]
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      "threats": [
        {
          "category": "impact",
          "date": "2016-02-08T13:45:58Z",
          "details": "important"
        }
      ],
      "title": "CVE-2015-8539"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.