rhsa-2020:1216
Vulnerability from csaf_redhat
Published
2020-03-31 14:36
Modified
2025-10-10 02:11
Summary
Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update

Notes

Topic
An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix(es): * QEMU: slirp: heap buffer overflow during packet reassembly (CVE-2019-14378) * QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711) * QEMU: qxl: null pointer dereference while releasing spice resources (CVE-2019-12155) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * After host update, older windows clients have large time drift (BZ#1639098) * [v2v] Migration performance regression (BZ#1648622) * Live storage migration fails with: TimeoutError: Timed out during operation: cannot acquire state change lock (held by monitor=remoteDispatchConnectGetAllDomainStats) and the VM becomes 'Not Responding' (BZ#1665256) * QEMU gets stuck on resume/cont call from libvirt (BZ#1673546) * [Intel 7.8 Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM qemu-kvm-rhev (BZ#1709972) * qemu aborts in blockCommit: qemu-kvm: block.c:3486: bdrv_replace_node: Assertion `!({ _Static_assert(!(sizeof(*&from->in_flight) > 8), "not expecting: " "sizeof(*&from->in_flight) > ATOMIC_REG_SIZE"); __atomic_load_n(&from->in_flight, 0); })' failed. (BZ#1711643) * ccid: Fix incorrect dwProtocol advertisement of T=0 (BZ#1721522) * Fail to migrate a rhel6.10-mt7.6 guest with dimm device (BZ#1724048) * qemu-kvm: backport cpuidle-haltpoll support (BZ#1734502) * qemu, qemu-img fail to detect alignment with XFS and Gluster/XFS on 4k block device (BZ#1743365) * ISST-LTE:RHV4.3 on RHEL7.6 kvm host:Power8:Tuleta-L:lotg7: call traces dumped on guest while performing guest migration (qemu-kvm-rhev) (BZ#1743508) * qemu coredump: qemu-kvm: block/create.c:68: qmp_blockdev_create: Assertion `drv' failed (BZ#1746224) * [Data plane]virtio_scsi_ctx_check: Assertion `blk_get_aio_context(d->conf.blk) == s->ctx' failed when unplug a device that running block stream on it (BZ#1764120) * qemu-kvm crashes when Windows VM is migrated with multiqueue (BZ#1775251) Enhancement(s): * [Intel 7.8 FEAT] MDS_NO exposure to guest - qemu-kvm-rhev (BZ#1716726)
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": "An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 and Red Hat Virtualization Engine 4.3.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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        "text": "KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.\n\nSecurity Fix(es):\n\n* QEMU: slirp: heap buffer overflow during packet reassembly (CVE-2019-14378)\n\n* QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711)\n\n* QEMU: qxl: null pointer dereference while releasing spice resources (CVE-2019-12155)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nBug Fix(es):\n\n* After host update, older windows clients have large time drift (BZ#1639098)\n\n* [v2v] Migration performance regression (BZ#1648622)\n\n* Live storage migration fails with: TimeoutError: Timed out during operation: cannot acquire state change lock (held by monitor=remoteDispatchConnectGetAllDomainStats) and the VM becomes \u0027Not Responding\u0027 (BZ#1665256)\n\n* QEMU gets stuck on resume/cont call from libvirt (BZ#1673546)\n\n* [Intel 7.8 Bug] [KVM][CLX] CPUID_7_0_EDX_ARCH_CAPABILITIES is not enabled in VM qemu-kvm-rhev (BZ#1709972)\n\n* qemu aborts in blockCommit: qemu-kvm: block.c:3486: bdrv_replace_node: Assertion `!({ _Static_assert(!(sizeof(*\u0026from-\u003ein_flight) \u003e 8), \"not expecting: \" \"sizeof(*\u0026from-\u003ein_flight) \u003e ATOMIC_REG_SIZE\"); __atomic_load_n(\u0026from-\u003ein_flight, 0); })\u0027 failed. (BZ#1711643)\n\n* ccid: Fix incorrect dwProtocol advertisement of T=0 (BZ#1721522)\n\n* Fail to migrate a rhel6.10-mt7.6 guest with dimm device (BZ#1724048)\n\n* qemu-kvm: backport cpuidle-haltpoll support (BZ#1734502)\n\n* qemu, qemu-img fail to detect alignment with XFS and Gluster/XFS on 4k block device (BZ#1743365)\n\n* ISST-LTE:RHV4.3 on RHEL7.6 kvm host:Power8:Tuleta-L:lotg7: call traces dumped on guest while performing guest migration (qemu-kvm-rhev) (BZ#1743508)\n\n* qemu coredump: qemu-kvm: block/create.c:68: qmp_blockdev_create: Assertion `drv\u0027 failed (BZ#1746224)\n\n* [Data plane]virtio_scsi_ctx_check: Assertion `blk_get_aio_context(d-\u003econf.blk) == s-\u003ectx\u0027 failed when unplug a device that running block stream on it (BZ#1764120)\n\n* qemu-kvm crashes when Windows VM is migrated with multiqueue (BZ#1775251)\n\nEnhancement(s):\n\n* [Intel 7.8 FEAT] MDS_NO exposure to guest - qemu-kvm-rhev (BZ#1716726)",
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          "organization": "Ruhr University Bochum"
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          "text": "interface_release_resource in hw/display/qxl.c in QEMU 3.1.x through 4.0.0 has a NULL pointer dereference.",
          "title": "Vulnerability description"
        },
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          "title": "Vulnerability description"
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          "text": "QEMU: slirp: heap buffer overflow during packet reassembly",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform:                                                                                                                 \n* This flaw impacts KVM user-mode or SLIRP networking, which is not used in Red Hat OpenStack Platform. Although updating is recommended for affected versions (see below), Red Hat OpenStack Platform environments are not vulnerable.\n* Because the flaw\u0027s impact is Low, it will not be fixed in Red Hat OpenStack Platform 9 which is retiring within a few weeks of the flaw\u0027s public date.",
          "title": "Statement"
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      "scores": [
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          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H",
            "version": "3.0"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: slirp: heap buffer overflow during packet reassembly"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Felipe Franciosi",
            "Peter Turschmid",
            "Raphael Norwitz"
          ],
          "organization": "nutanix.com"
        }
      ],
      "cve": "CVE-2020-1711",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2020-01-20T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1794290"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue affects the versions of the qemu-kvm package as shipped with Red Hat Enterprise Linux 8, Red Hat OpenStack, Red Hat Virtualization and Red Hat Enterprise Linux Advanced Virtualization 8.",
          "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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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-1711"
        },
        {
          "category": "external",
          "summary": "RHBZ#1794290",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1794290"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-1711",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-1711"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-1711",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-1711"
        }
      ],
      "release_date": "2020-01-23T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-03-31T14:36:08+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/2974891\n\nAfter installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.",
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          "restart_required": {
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          "url": "https://access.redhat.com/errata/RHSA-2020:1216"
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            "integrityImpact": "LOW",
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      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server"
    }
  ]
}


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