Description
An issue was discovered in ioapic_lazy_update_eoi in arch/x86/kvm/ioapic.c in the Linux kernel before 5.9.2. It has an infinite loop related to improper interaction between a resampler and edge triggering, aka CID-77377064c3a9.
References (4)
Core 4
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://bugzilla.kernel.org/show_bug.cgi?id=208767
Mailing List, Patch, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/11/03/1
Mailing List, Patch, Vendor Advisory x_refsource_confirm
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77377064c3a94911339f13ce113b3abf265e06da
Mailing List, Release Notes, Vendor Advisory x_refsource_confirm
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2
Scores
CVSS v3
5.5
EPSS
0.0003
EPSS Percentile
8.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-835
Status
published
Products (1)
linux/linux_kernel
< 5.9.2
Published
Nov 06, 2020
Tracked Since
Feb 18, 2026