Buffer overflow in Linux-Loader Project
CVE-2022-23523
In versions prior to 0.8.1, the linux-loader crate uses the offsets and sizes provided in the ELF headers to determine the offsets to read from. If those offsets point beyond the end of the file this could lead to Virtual Machine Monitors using the `linux-loader` crate entering an infinite loop if the ELF header of the kernel they are loading was modified in a malicious manner. This issue has been addressed in 0.8.1. The issue can be mitigated by ensuring that only trusted kernel images are loaded or by verifying that the headers do not point beyond the end of the file.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Linux-Loader Project
- Rust-Vmm Linux-Loader — versions < 0.8.1
Weakness classification (CWE)
References
- github.com/rust-vmm/linux-loader/security/advisories/GHSA-52h2-m2cf-9jh6 (Third Party Advisory, Issue Tracking)
- github.com/rust-vmm/linux-loader/pull/125 (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2022-23523?
- CVE-2022-23523 is a medium-severity vulnerability in Linux-Loader Project, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 4.0/10. Published 2022-12-13.
- How severe is CVE-2022-23523?
- Medium severity. CVSS v3 base score is 4.0 out of 10.