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Medium · 6.9 CVE-2025-34450 EUVD-2025-204399GHSA-h7qg-49w9-4cpx

merbanan/rtl_433 <= 25.02 Stack-based Buffer Overflow

Published Dec 18, 2025 · Updated May 14, 2026 · Assigned by VulnCheck

Description

merbanan/rtl_433 versions up to and including 25.02 and prior to commit 25e47f8 contain a stack-based buffer overflow vulnerability in the function parse_rfraw() located in src/rfraw.c. When processing crafted or excessively large raw RF input data, the application may write beyond the bounds of a stack buffer, resulting in memory corruption or a crash. This vulnerability can be exploited to cause a denial of service and, under certain conditions, may be leveraged for further exploitation depending on the execution environment and available mitigations.

Affected products

VendorProductAffectedFixed
merbanan rtl_433 ≤ 25.02 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 rtl-433 25.12-1 —
Debian 13 rtl-433 25.02-1+deb13u1 —
Debian 12 rtl-433 No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 rtl-433 No fix yet —
Ubuntu 26.04 LTS rtl-433 No fix yet —
Ubuntu 25.10 rtl-433 No fix yet —
Ubuntu 24.04 LTS rtl-433 No fix yet —
Ubuntu 22.04 LTS rtl-433 No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 20.04 LTS rtl-433 No fix yet —

References