SB2025090243 - Fedora 44 update for kea
Published: September 2, 2025
Security Bulletin ID
SB2025090243
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Reachable assertion (CVE-ID: CVE-2025-40779)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion when handling DHCP packets. A remote attacker can send a request with some specific options, and Kea fails to find an appropriate subnet for the client, the kea-dhcp4 process will abort with an assertion failure. A remote attacker can perform a denial of service attack.
Remediation
Install update from vendor's website.