kernel security and bug fix update

2.6.32-696.20.1.OL6 - Update genkey bug 25599697 2.6.32-696.20.1 - x86 kaiser/efi: unbreak tboot Waiman Long 1519799 1519802 CVE-2017-5754 - x86 pti/mm: Fix trampoline stack problem with XEN PV Waiman Long 1519799 1519802 CVE-2017-5754 - x86 pti/mm: Fix XEN PV boot failure Waiman Long 1519799...

Fedora 27 : xen (2017-5945560816)

another patch related to the XSA-240, CVE-2017-15595 issue x86 PV guests may gain access to internally used page XSA-248 broken x86 shadow mode refcount overflow check XSA-249 improper x86 shadow mode refcount error handling XSA-250 improper bug check in x86 log-dirty handling XSA-251 Note that...

Fedora 27 : xen (2017-333ea49a63)

xen: various flaws 1490884 Missing NUMA node parameter verification XSA-231, CVE-2017-14316 Missing check for grant table XSA-232, CVE-2017-14318 cxenstored: Race in domain cleanup XSA-233, CVE-2017-14317 insufficient grant unmapping checks for x86 PV guests XSA-234, CVE-2017-14319 Note that...

CVE-2017-17566

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash or gain host OS privileges in shadow mode by mapping a certain auxiliary page...

CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

CVE-2017-17566

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash or gain host OS privileges in shadow mode by mapping a certain auxiliary page...

CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

CVE-2017-17566

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash or gain host OS privileges in shadow mode by mapping a certain auxiliary page...

CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

Design/Logic Flaw

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

UBUNTU-CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

CVE-2017-17566

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash or gain host OS privileges in shadow mode by mapping a certain auxiliary page...

CVE-2017-17565

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash if shadow mode and log-dirty mode are in place, because of an incorrect assertion related to M2P...

CVE-2017-17566

An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service host OS crash or gain host OS privileges in shadow mode by mapping a certain auxiliary page...

x86 PV guests may gain access to internally used pages

ISSUE DESCRIPTION Memory management for PV guests builds on page ownership and page attributes. A domain can always map, at least r/o, pages of which it is the owner. Certain fields in the control structure of a page are used for different purposes in the main PV memory management code and in cod...

improper bug check in x86 log-dirty handling

ISSUE DESCRIPTION Memory sharing, available to x86 HVM guests only, uses a special value in the global machine to physical address translation table M2P. PV guests have full control over M2P entries corresponding to pages they own. A bug check specifically, an assertion that an M2P entry is not t...

SUSE SLES11 Security Update : xen (SUSE-SU-2017:3242-1)

This update for xen fixes several issues. These security issues were fixed : - bsc1068187: Failure to recognize errors in the Populate on Demand PoD code allowed for DoS XSA-246 - bsc1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed...

SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2864-1)

This update for xen fixes several issues: These security issues were fixed : - CVE-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host...

pin count / page reference race in grant table code

ISSUE DESCRIPTION Grant copying code made an implication that any grant pin would be accompanied by a suitable page reference. Other portions of code, however, did not match up with that assumption. When such a grant copy operation is being done on a grant of a dying domain, the assumption turns...