CVE-2026-22214 - RIOT OS <= 2026.01-devel-317 Stack-Based Buffer Overflow in ethos Serial Frame Parser

CVE-2026-22214 - RIOT OS <= 2026.01-devel-317 Stack-Based Buffer Overflow in ethos Serial Frame Parser

https://cvefeed.io/rssfeed/latest.atom / Tue, 01/13/2026 - 01:57
CVE ID : CVE-2026-22214
Published : Jan. 12, 2026, 11:15 p.m. | 1 hour, 11 minutes ago
Description : RIOT OS versions up to and including 2026.01-devel-317 contain a stack-based buffer overflow vulnerability in the ethos utility due to missing bounds checking when processing incoming serial frame data. The vulnerability occurs in the _handle_char() function, where incoming frame bytes are appended to a fixed-size stack buffer without verifying that the current write index remains within bounds. An attacker capable of sending crafted serial or TCP-framed input can cause the current write index to exceed the buffer size, resulting in a write past the end of the stack buffer. This condition leads to memory corruption and application crash.
Severity: 6.8 | MEDIUM
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