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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rtl-433 | 25.12-1 | — |
| Debian 13 | rtl-433 | 25.02-1+deb13u1 | — |
| Debian 12 | rtl-433 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | rtl-433 | No fix yet | — |
References
- https://github.com/marlinkcyber/advisories/blob/main/advisories/MCSAID-2025-004-rtl_433-rfraw-parse-overflow.md technical-description exploit
- https://github.com/merbanan/rtl_433/issues/3375 issue-tracking
- https://github.com/dd32/rtl_433/commit/25e47f8 patch
- https://www.vulncheck.com/advisories/merbanan-rtl-433-stack-based-buffer-overflow third-party-advisory