CVE-2025-1673

Out of bounds read when calling crc16_ansi and strlen in dns_validate_msg

Description

A malicious or malformed DNS packet without a payload can cause an out-of-bounds read, resulting in a crash (denial of service) or an incorrect computation.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.09%
Vendor Advisory github.com
Affected: zephyrproject-rtos Zephyr
Published at:
Updated at:

References

Link Tags
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-jjhx-rrh4-j8mx mitigation vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-1673?
CVE-2025-1673 has been scored as a high severity vulnerability.
How to fix CVE-2025-1673?
To fix CVE-2025-1673, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-1673 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-1673 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-1673?
CVE-2025-1673 affects zephyrproject-rtos Zephyr.
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