suse-su-2018:1479-1
Vulnerability from csaf_suse
Published
2018-05-30 14:54
Modified
2018-05-30 14:54
Summary
Security update for kvm

Notes

Title of the patch
Security update for kvm
Description of the patch
This update for kvm fixes one security issues. This security issue was fixed: - CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM guests (bsc#1092885). Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. This patch permits the new x86 cpu feature flag named 'ssbd' to be presented to the guest, given that the host has this feature, and KVM exposes it to the guest as well. For this feature to be enabled please use the qemu commandline -cpu $MODEL,+spec-ctrl,+ssbd so the guest OS can take advantage of the feature. spec-ctrl and ssbd support is also required in the host.
Patchnames
slessp4-kvm-13634
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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    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
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        "title": "Title of the patch"
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        "text": "This update for kvm fixes one security issues.\n\nThis security issue was fixed:\n\n- CVE-2018-3639: Spectre v4 vulnerability mitigation support for KVM guests (bsc#1092885).\n  \n  Systems with microprocessors utilizing speculative execution and speculative\n  execution of memory reads before the addresses of all prior memory writes are\n  known may allow unauthorized disclosure of information to an attacker with\n  local user access via a side-channel analysis.\n  \n  This patch permits the new x86 cpu feature flag named \u0027ssbd\u0027 to be\n  presented to the guest, given that the host has this feature, and\n  KVM exposes it to the guest as well.\n  \n  For this feature to be enabled please use the qemu commandline\n  -cpu $MODEL,+spec-ctrl,+ssbd\n  so the guest OS can take advantage of the feature.\n  \n  spec-ctrl and ssbd support is also required in the host.\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "slessp4-kvm-13634",
        "title": "Patchnames"
      },
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        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
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    "publisher": {
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      },
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        "url": "https://bugzilla.suse.com/1092885"
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        "summary": "SUSE CVE CVE-2018-3639 page",
        "url": "https://www.suse.com/security/cve/CVE-2018-3639/"
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    "title": "Security update for kvm",
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        "engine": {
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      "id": "SUSE-SU-2018:1479-1",
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      "revision_history": [
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          "number": "1",
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      ],
      "status": "final",
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    }
  },
  "product_tree": {
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          {
            "branches": [
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            ],
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          },
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        },
        "product_reference": "kvm-1.4.2-60.12.1.i586",
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      },
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        },
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        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP Applications 11 SP4"
      },
      {
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        },
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      },
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        },
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        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP Applications 11 SP4"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2018-3639",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2018-3639"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Systems with microprocessors utilizing speculative execution and speculative execution of memory reads before the addresses of all prior memory writes are known may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka Speculative Store Bypass (SSB), Variant 4.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.i586",
          "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.s390x",
          "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.x86_64",
          "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.i586",
          "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.s390x",
          "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.x86_64"
        ]
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          "url": "https://www.suse.com/security/cve/CVE-2018-3639"
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        {
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          "summary": "SUSE Bug 1074701 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1074701"
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        {
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          "summary": "SUSE Bug 1085235 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1085235"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1085308 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1085308"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1087078 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1087078"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1087082 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1087082"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1092631 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1092631"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1092885 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1092885"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1094912 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1094912"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1098813 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1098813"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1100394 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1100394"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1102640 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1102640"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1105412 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1105412"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1111963 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1111963"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1172781 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1172781"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1172782 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1172782"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1172783 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1172783"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1173489 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1173489"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1178658 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1178658"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1201877 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1201877"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1215674 for CVE-2018-3639",
          "url": "https://bugzilla.suse.com/1215674"
        }
      ],
      "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": [
            "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.i586",
            "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.s390x",
            "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.i586",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.s390x",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N",
            "version": "3.0"
          },
          "products": [
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            "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.s390x",
            "SUSE Linux Enterprise Server 11 SP4:kvm-1.4.2-60.12.1.x86_64",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.i586",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.s390x",
            "SUSE Linux Enterprise Server for SAP Applications 11 SP4:kvm-1.4.2-60.12.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2018-05-30T14:54:22Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2018-3639"
    }
  ]
}


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  • 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.
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