Vulnerability · Published Nov 6, 2020 · Assigned by mitre
CVE-2020-27152
Medium 5.5
In plain English
A medium-severity security flaw in the kernel-abi-whitelists package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.6%top 52.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | kernel-abi-whitelists | 4.18.0-240.22.1.el8_3 | ALSA-2021:1093 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-240.22.1.el8_3 | ALSA-2021:1093 |
| Debian:12 | linux | 5.9.6-1 | DEBIAN-CVE-2020-27152 |
| Debian:13 | linux | 5.9.6-1 | DEBIAN-CVE-2020-27152 |
| Debian:14 | linux | 5.9.6-1 | DEBIAN-CVE-2020-27152 |
Affected products (as reported)
References
- https://bugzilla.kernel.org/show_bug.cgi?id=208767 x_refsource_MISC
- [oss-security] 20201103 CVE-2020-27152 Kernel: KVM: host stack overflow via loop due to lazy update IOAPIC mailing-list, x_refsource_MLIST
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=77377064c3a94911339f13ce113b3abf265e06da x_refsource_CONFIRM
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.2 x_refsource_CONFIRM