eepro100: Prevent two endless loops [CVE-2015-8345] (#1285215), pcnet:
fix rx buffer overflow [CVE-2015-7512], ui: vnc: avoid floating point exception [CVE-2015-8504], additional patch for [XSA-158, CVE-2015-8338] long running memory operations on ARM [XSA-158, CVE-2015-8338] XENMEM_exchange error handling issues [XSA-159, CVE-2015-8339, CVE-2015-8340] libxl leak of pv kernel and initrd on error [XSA-160, CVE-2015-8341] ---- heap buffer overflow vulnerability in pcnet emulator [XSA-162, CVE-2015-7504], virtual PMU is unsupported [XSA-163]

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

This update fixes the following security issues :

  - bsc#955399 - Fix xm migrate --log_progress. Due to logic     error progress was not logged when requested.

  - bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100:
    infinite loop in processing command block list

  - bsc#956592 - xen: virtual PMU is unsupported (XSA-163)

  - bsc#956408 - CVE-2015-8339, CVE-2015-8340: xen:
    XENMEM_exchange error handling issues (XSA-159)

  - bsc#956409 - CVE-2015-8341: xen: libxl leak of pv kernel     and initrd on error (XSA-160)

  - bsc#956411 - CVE-2015-7504: xen: heap buffer overflow     vulnerability in pcnet emulator (XSA-162)

  - bsc#947165 - CVE-2015-7311: xen: libxl fails to honour     readonly flag on disks with qemu-xen (xsa-142)

  - bsc#955399 - Fix xm migrate --live. The options were not     passed due to a merge error. As a result the migration     was not live, instead the suspended guest was migrated.

  - bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by     triggering an infinite loop in microcode via #DB     exception

  - bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during     fault delivery (XSA-156)

  - bsc#950704 - CVE-2015-7970: xen: x86: Long latency     populate-on-demand operation is not preemptible     (XSA-150)

  - bsc#951845 - CVE-2015-7972: xen: x86: populate-on-demand     balloon size inaccuracy can crash guests (XSA-153)

  - Drop     5604f239-x86-PV-properly-populate-descriptor-tables.patc     h

  - bsc#950703 - CVE-2015-7969: xen: leak of main per-domain     vcpu pointer array (DoS) (XSA-149)

  - bsc#950705 - CVE-2015-7969: xen: x86: leak of per-domain     profiling-related vcpu pointer array (DoS) (XSA-151)

  - bsc#950706 - CVE-2015-7971: xen: x86: some pmu and     profiling hypercalls log without rate limiting (XSA-152)

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

The Xen Project reports :

When constructing a guest which is configured to use a PV bootloader which runs as a userspace process in the toolstack domain (e.g.
pygrub) libxl creates a mapping of the files to be used as kernel and initial ramdisk when building the guest domain.

However if building the domain subsequently fails these mappings would not be released leading to a leak of virtual address space in the calling process, as well as preventing the recovery of the temporary disk files containing the kernel and initial ramdisk.

For toolstacks which manage multiple domains within the same process, an attacker who is able to repeatedly start a suitable domain (or many such domains) can cause an out-of-memory condition in the toolstack process, leading to a denial of service.

Under the same circumstances an attacker can also cause files to accumulate on the toolstack domain filesystem (usually under /var in dom0) used to temporarily store the kernel and initial ramdisk, perhaps leading to a denial of service against arbitrary other services using that filesystem.

This update for xen fixes the following security issues :

  - CVE-2015-8568 CVE-2015-8567: xen: qemu: net: vmxnet3:
    host memory leakage (boo#959387)

  - CVE-2015-8550: xen: paravirtualized drivers incautious     about shared memory contents (XSA-155, boo#957988)

  - CVE-2015-8558: xen: qemu: usb: infinite loop in     ehci_advance_state results in DoS (boo#959006)

  - CVE-2015-7549: xen: qemu pci: NULL pointer dereference     issue (boo#958918)

  - CVE-2015-8504: xen: qemu: ui: vnc: avoid floating point     exception (boo#958493)

  - CVE-2015-8554: xen: qemu-dm buffer overrun in MSI-X     handling (XSA-164, boo#958007)

  - CVE-2015-8555: xen: information leak in legacy x86     FPU/XMM initialization (XSA-165, boo#958009)

  - boo#958523: xen: ioreq handling possibly susceptible to     multiple read issue (XSA-166)

  - CVE-2015-5307: xen: x86: CPU lockup during fault     delivery (XSA-156, boo#954018)

  - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop     in processing command block list (boo#956832)

  - boo#956592: xen: virtual PMU is unsupported (XSA-163)

  - CVE-2015-8339, CVE-2015-8340: xen: XENMEM_exchange error     handling issues (XSA-159, boo#956408)

  - CVE-2015-8341: xen: libxl leak of pv kernel and initrd     on error (XSA-160, boo#956409)

  - CVE-2015-7504: xen: heap buffer overflow vulnerability     in pcnet emulator (XSA-162, boo#956411)

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
89135	Fedora 22 : xen-4.5.2-5.fc22 (2015-08e4af5a20)	Nessus	Fedora Local Security Checks	2016/3/4	2021/1/11	critical
87650	SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2015:2338-1)	Nessus	SuSE Local Security Checks	2015/12/29	2021/1/6	high
87745	FreeBSD : xen-tools -- libxl leak of pv kernel and initrd on error (5d1d4473-b40d-11e5-9728-002590263bf5)	Nessus	FreeBSD Local Security Checks	2016/1/6	2021/1/4	high
88125	openSUSE Security Update : xen (openSUSE-2016-35)	Nessus	SuSE Local Security Checks	2016/1/25	2021/1/19	high

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