Vulnerability · Published Dec 13, 2022 · Assigned by GitHub_M

CVE-2022-23523rust-vmm linux-loader vulnerable to Out-of-bounds Read

Medium 4.0

In plain English

A medium-severity out-of-bounds read in linux-loader from rust-vmm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)4.0Medium

Exploit odds (30 days)0.2%top 87.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
rust-vmm	linux-loader	< 0.8.1

Weakness: CWE-125, CWE-119 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/rust-vmm/linux-loader/security/advisories/GHSA-52h2-m2cf-9jh6 x_refsource_CONFIRM
https://github.com/rust-vmm/linux-loader/pull/125 x_refsource_MISC