ISC has issued an advisory on May 26:
The issue is fixed upstream in 4.4.2-P1, and there is a patch available:
Mageia 7 and Mageia 8 are also affected.
MGA8TOO, MGA7TOOStatus comment:
Fixed upstream in 4.4.2-P1Blocks:
dhcp is maintained by all sorts of people, so assigning this to everybody.
Ubuntu has issued an advisory for this on May 27:
Fedora has issued an advisory for this on June 2:
Updated dhcp packages fix security vulnerability:
A flaw was found in the Dynamic Host Configuration Protocol (DHCP). There is a
discrepancy between the code that handles encapsulated option information in
leases transmitted "on the wire" and the code which reads and parses lease
information after it has been written to disk storage. This flaw allows an
attacker to deliberately cause a situation where dhcpd while running in DHCPv4
or DHCPv6 mode, or the dhclient attempts to read a stored lease that contains
option information, to trigger a stack-based buffer overflow in the option
parsing code for colon-separated hex digits values. The highest threat from
this vulnerability is to data confidentiality and integrity as well as service
Updated packages in core/updates_testing:
Fixed upstream in 4.4.2-P1 =>
MGA8TOO, MGA7TOO =>
in the previous version, there was a bug with the notify to systemd; which meant that the service seemed to work at first and then stop with timeout after 1.5min.
This version actually solves my issue...
dhcp-server (and common) on mga7-64 working fine.
MGA7TOO MGA8-64-OK =>
MGA7TOO MGA7-64-OK MGA8-64-OK
An update for this issue has been pushed to the Mageia Updates repository.