Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:
- Initializing the DNS stub resolver from an /etc/resolv.conf file, or a LOCALDOMAIN environment variable,
whose search list contains a domain of roughly 200 characters or more in the GNU C Library version 2.26 to
2.44 results in an assertion failure which aborts the process. The resolver truncates the search list when
copying it into the fixed-size _res.defdname buffer, then asserts that the copy is consistent with the
full configuration. The consistency check compared against the wrong size and did not handle a first entry
that does not fit, so a correctly truncated list failed the assertion. Any process that resolves names
through the library is affected, including long-running processes that reload /etc/resolv.conf on the next
query after it changes. Search domains are commonly written to /etc/resolv.conf from data received over
DHCP or from a VPN server, so an attacker on the local network may be able to trigger this without
privileges on the target system, subject to validation by the network configuration software.
(CVE-2026-8674)
Solution
Update the glibc-2.44 library and its related packages to version 2.44-r8 or later.
Plugin Details
Risk Information
Vector: CVSS2#AV:A/AC:H/Au:N/C:N/I:N/A:C
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 9/17/2026