CVE-2026-1678
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
dns: memory‑safety issue in the DNS name parser
dns_unpack_name() 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 write when CONFIG_DNS_RESOLVER is enabled.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Zephyr
- Vendor
- zephyrproject-rtos
- Product
- Zephyr
- Platforms
- Unknown
- Default status
unaffected- Package
- Zephyr
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| * | affected | git | 3.7.2 | Unavailable | None listed |
| 4.0.0 | affected | git | 4.2.2 | Unavailable | None listed |
| 4.3.0 | affected | git | 4.3.1 | Unavailable | None listed |