suse-su-2017:2775-1
Vulnerability from csaf_suse
Published
2017-10-19 08:52
Modified
2017-10-19 08:52
Summary
Security update for Linux Kernel Live Patch 27 for SLE 12

Notes

Title of the patch
Security update for Linux Kernel Live Patch 27 for SLE 12
Description of the patch
This update for the Linux Kernel 3.12.61-52_92 fixes several issues. The following security bugs were fixed: - CVE-2017-15274: security/keys/keyctl.c in the Linux kernel did not consider the case of a NULL payload in conjunction with a nonzero length value, which allowed local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call (bsc#1045327). - CVE-2017-1000112: Updated patch for this issue to be in sync with the other livepatches. Description of the issue: Prevent race condition in net-packet code that could have been exploited by unprivileged users to gain root access (bsc#1052368, bsc#1052311). - CVE-2017-9242: The __ip6_append_data function in net/ipv6/ip6_output.c was too late in checking whether an overwrite of an skb data structure may occur, which allowed local users to cause a denial of service (system crash) via crafted system calls (bsc#1042892). - CVE-2017-7645: The NFSv2/NFSv3 server in the nfsd subsystem allowed remote attackers to cause a denial of service (system crash) via a long RPC reply (bsc#1046191).
Patchnames
SUSE-SLE-SERVER-12-2017-1716
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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    "title": "Security update for Linux Kernel Live Patch 27 for SLE 12",
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        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb-\u003elen becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev-\u003elen - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005.",
          "title": "CVE description"
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      ],
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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 Server 12-LTSS:kgraft-patch-3_12_61-52_92-default-2-4.1.x86_64",
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
          ]
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    {
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      "ids": [
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          "text": "https://www.suse.com/security/cve/CVE-2017-15274"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.",
          "title": "CVE description"
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          "product_ids": [
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-default-2-4.1.x86_64",
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
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      ],
      "scores": [
        {
          "cvss_v3": {
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
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            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
          ]
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      "threats": [
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          "date": "2017-10-19T08:52:24Z",
          "details": "low"
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          "text": "https://www.suse.com/security/cve/CVE-2017-7645"
        }
      ],
      "notes": [
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          "category": "general",
          "text": "The NFSv2/NFSv3 server in the nfsd subsystem in the Linux kernel through 4.10.11 allows remote attackers to cause a denial of service (system crash) via a long RPC reply, related to net/sunrpc/svc.c, fs/nfsd/nfs3xdr.c, and fs/nfsd/nfsxdr.c.",
          "title": "CVE description"
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        },
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          "summary": "SUSE Bug 1034670 for CVE-2017-7645",
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          "url": "https://bugzilla.suse.com/1036741"
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          "summary": "SUSE Bug 1046191 for CVE-2017-7645",
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          "product_ids": [
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-default-2-4.1.x86_64",
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
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          "cvss_v3": {
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          "details": "important"
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    },
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          "text": "https://www.suse.com/security/cve/CVE-2017-9242"
        }
      ],
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        {
          "category": "general",
          "text": "The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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          "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
        ]
      },
      "references": [
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          "category": "external",
          "summary": "CVE-2017-9242",
          "url": "https://www.suse.com/security/cve/CVE-2017-9242"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1041431 for CVE-2017-9242",
          "url": "https://bugzilla.suse.com/1041431"
        },
        {
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          "summary": "SUSE Bug 1042892 for CVE-2017-9242",
          "url": "https://bugzilla.suse.com/1042892"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
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      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "products": [
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-default-2-4.1.x86_64",
            "SUSE Linux Enterprise Server 12-LTSS:kgraft-patch-3_12_61-52_92-xen-2-4.1.x86_64"
          ]
        }
      ],
      "threats": [
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          "category": "impact",
          "date": "2017-10-19T08:52:24Z",
          "details": "important"
        }
      ],
      "title": "CVE-2017-9242"
    }
  ]
}


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