CVE-2025-1675 Out of bounds read in dns_copy_qname
An out-of-bounds read in Zephyr RTOS allows attackers to cause denial of service or disclose sensitive memory contents via crafted DNS packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-1675?
CVE-2025-1675 is a high-severity memory corruption vulnerability in Zephyrproject Zephyr, published on 25 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The function dns_copy_qname in dns_pack.c performs performs a memcpy operation with an untrusted field and does not check if the source buffer is large enough to contain the copied data.
Weakness: CWE-125
Which versions are affected by CVE-2025-1675?
It affects 1 product.
Products include Zephyrproject Zephyr.
How do I fix CVE-2025-1675?
No fix has been published for CVE-2025-1675 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-1675 being exploited?
There is no known exploitation of CVE-2025-1675 in the wild and no public exploit code.
Other vulnerabilities in Zephyrproject Zephyr
- CVE-2026-5067 Out-of-bounds read/write in HTTP WebSocket upgrade via non-null-terminated Sec-WebSocket-Key
- CVE-2022-3806 Bluetooth HCI Error Handling Double Free
- CVE-2017-14199 Memory corruption in getaddrinfo
- CVE-2018-1000800 Null dereference in n/a
- CVE-2021-3329 DOS: Incorrect handling of the initial HCI ACL_MTU handshake packet leads to crash of bluetooth host layer
Sources
Also known as GHSA-2m84-5hfw-m8v4.