- fix crash with virgl enabled (bz #1692323)

  - linux-user: make pwrite64/pread64(fd, NULL, 0, offset)     return 0 (bz #1174267)

  - Fix build with latest gluster (bz #1684298)

  - CVE-2018-20123: pvrdma: memory leakage in device hotplug     (bz #1658964)

  - CVE-2018-16872: usb-mtp: path traversal issue (bz     #1659150)

  - CVE-2018-20191: pvrdma: uar_read leads to NULL deref (bz     #1660315)

  - CVE-2019-6501: scsi-generic: possible OOB access (bz     #1669005)

  - CVE-2019-6778: slirp: heap buffer overflow (bz #1669072)

  - CVE-2019-3812: Out-of-bounds read in hw/i2c/i2c-ddc.c     allows for memory disclosure (bz #1678081)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for qemu-kvm-ma is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-ma packages provide the user-space component for running virtual machines that use KVM on the IBM z Systems, IBM Power, and 64-bit ARM architectures.

Security Fix(es) :

* QEMU: net: ignore packets with large size (CVE-2018-17963)

* QEMU: scsi-generic: possible OOB access while handling inquiry request (CVE-2019-6501)

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.

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.7 Release Notes linked from the References section.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4640 advisory.

  - pvrdma_realize in hw/rdma/vmw/pvrdma_main.c in QEMU has a Memory leak after an initialisation error.
    (CVE-2018-20123)

  - In QEMU 3.0.0, tcp_emu in slirp/tcp_subr.c has a heap-based buffer overflow. (CVE-2019-6778)

  - Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers on some microprocessors utilizing     speculative execution may allow an authenticated user to potentially enable information disclosure via a     side channel with local access. A list of impacted products can be found here:
    https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-     update-guidance_05132019.pdf (CVE-2018-12126)

  - Microarchitectural Fill Buffer Data Sampling (MFBDS): Fill buffers on some microprocessors utilizing     speculative execution may allow an authenticated user to potentially enable information disclosure via a     side channel with local access. A list of impacted products can be found here:
    https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-     update-guidance_05132019.pdf (CVE-2018-12130)

  - Microarchitectural Load Port Data Sampling (MLPDS): Load ports on some microprocessors utilizing     speculative execution may allow an authenticated user to potentially enable information disclosure via a     side channel with local access. A list of impacted products can be found here:
    https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-     update-guidance_05132019.pdf (CVE-2018-12127)

  - Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors     utilizing speculative execution may allow an authenticated user to potentially enable information     disclosure via a side channel with local access. A list of impacted products can be found here:
    https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-     update-guidance_05132019.pdf (CVE-2019-11091)

  - The Bluetooth subsystem in QEMU mishandles negative values for length variables, leading to memory     corruption. (CVE-2018-19665)

  - In QEMU 3.1, scsi_handle_inquiry_reply in hw/scsi/scsi-generic.c allows out-of-bounds write and read     operations. (CVE-2019-6501)

  - tcp_emu in slirp/tcp_subr.c (aka slirp/src/tcp_subr.c) in QEMU 3.0.0 uses uninitialized data in an     snprintf call, leading to Information disclosure. (CVE-2019-9824)

  - Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data     type for a size value. (CVE-2018-18438)

  - In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a     buffer overflow risk. (CVE-2018-20815)

  - QEMU, through version 2.10 and through version 3.1.0, is vulnerable to an out-of-bounds read of up to 128     bytes in the hw/i2c/i2c-ddc.c:i2c_ddc() function. A local attacker with permission to execute i2c commands     could exploit this to read stack memory of the qemu process on the host. (CVE-2019-3812)

  - hw/ppc/spapr.c in QEMU through 3.1.0 allows Information Exposure because the hypervisor shares the     /proc/device-tree/system-id and /proc/device-tree/model system attributes with a guest. (CVE-2019-8934)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2425 advisory.

  - QEMU: seccomp: blacklist is not applied to all threads (CVE-2018-15746)

  - QEMU: rtl8139: integer overflow leads to buffer overflow (CVE-2018-17958)

  - QEMU: net: ignore packets with large size (CVE-2018-17963)

  - QEMU: scsi-generic: possible OOB access while handling inquiry request (CVE-2019-6501)

  - QEMU: slirp: heap buffer overflow in tcp_emu() (CVE-2019-6778)

  - QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:2553 advisory.

  - hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) (CVE-2018-12126)

  - hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) (CVE-2018-12127)

  - hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) (CVE-2018-12130)

  - QEMU: rtl8139: integer overflow leads to buffer overflow (CVE-2018-17958)

  - QEMU: net: ignore packets with large size (CVE-2018-17963)

  - QEMU: device_tree: heap buffer overflow while loading device tree blob (CVE-2018-20815)

  - QEMU: scsi-generic: possible OOB access while handling inquiry request (CVE-2019-6501)

  - QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824)

  - hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) (CVE-2019-11091)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Published	Updated	Severity
124467	Fedora 30 : 2:qemu (2019-0664c7724d)	Nessus	Fedora Local Security Checks	5/2/2019	1/21/2020	high
127689	RHEL 7 : qemu-kvm-ma (RHSA-2019:2166)	Nessus	Red Hat Local Security Checks	8/12/2019	1/6/2020	critical
180647	Oracle Linux 7 : qemu (ELSA-2019-4640)	Nessus	Oracle Linux Local Security Checks	9/7/2023	9/8/2023	critical
193989	RHEL 7 : qemu-kvm-rhev (RHSA-2019:2425)	Nessus	Red Hat Local Security Checks	4/27/2024	4/27/2024	critical
128205	RHEL 7 : qemu-kvm-rhev (RHSA-2019:2553)	Nessus	Red Hat Local Security Checks	8/27/2019	5/1/2024	critical

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