CVE-2026-1678

dnsunpackname caches the buffer tailroom once and reuses it while appending DNS labels. As the buffer grows, the cached size becomes incorrect, and the final null terminator can be written past the buffer. With assertions disabled default, a malicious DNS response can trigger an out-of-bounds wri...

CVE-2026-1678 dns: memory‑safety issue in the DNS name parser

dnsunpackname caches the buffer tailroom once and reuses it while appending DNS labels. As the buffer grows, the cached size becomes incorrect, and the final null terminator can be written past the buffer. With assertions disabled default, a malicious DNS response can trigger an out-of-bounds wri...

PT-2026-23408

Name of the Vulnerable Software and Affected Versions Zephyr RTOS affected versions not specified Description The dns unpack name function in Zephyr RTOS contains a flaw where it caches the buffer tailroom and reuses it when appending DNS labels. As the buffer expands, the cached size becomes...