Use of Out-of-range Pointer Offset Affecting virt-firmware-rs package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.35% (28th percentile)

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  • Snyk IDSNYK-CENTOS10-VIRTFIRMWARERS-15995299
  • published12 Apr 2026
  • disclosed9 Apr 2026

Introduced: 9 Apr 2026

CVE-2026-34942  (opens in a new tab)
CWE-823  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 virt-firmware-rs.

NVD Description

Note: Versions mentioned in the description apply only to the upstream virt-firmware-rs package and not the virt-firmware-rs package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, Wasmtime's implementation of transcoding strings into the Component Model's utf16 or latin1+utf16 encodings improperly verified the alignment of reallocated strings. This meant that unaligned pointers could be passed to the host for transcoding which would trigger a host panic. This panic is possible to trigger from malicious guests which transfer very specific strings across components with specific addresses. Host panics are considered a DoS vector in Wasmtime as the panic conditions are controlled by the guest in this situation. This vulnerability is fixed in 24.0.7, 36.0.7, 42.0.2, and 43.0.1.

CVSS Base Scores

version 3.1