CVE-2015-7971
EPSS 0.07%
描述
Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c.
如何修補 CVE-2015-7971
要修補 CVE-2015-7971,請將受影響套件升級到下列已修補版本。
- Debian/xen—升級至 4.6.0-1 或更新版本
CVE-2015-7971 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 4.6.0-1