Vulnerability Details : CVE-2020-27152
Potential exploit
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.
Products affected by CVE-2020-27152
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27152
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 16 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27152
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-27152
-
The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27152
-
http://www.openwall.com/lists/oss-security/2020/11/03/1
oss-security - CVE-2020-27152 Kernel: KVM: host stack overflow via loop due to lazy update IOAPICMailing List;Patch;Third Party Advisory
-
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2
Mailing List;Release Notes;Vendor Advisory
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77377064c3a94911339f13ce113b3abf265e06da
kernel/git/torvalds/linux.git - Linux kernel source treeMailing List;Patch;Vendor Advisory
-
https://bugzilla.kernel.org/show_bug.cgi?id=208767
208767 – kernel stack overflow due to Lazy update IOAPIC on an x86_64 *host*, when gpu is passthrough to macos guest vmExploit;Issue Tracking;Third Party Advisory
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