FEDORA-2023-63e5a77522
Packages in this update:
glibc-2.38-6.fc39
Update description:
Security fix for CVE-2023-4911, CVE-2023-4806, and CVE-2023-4527.
CVE-2023-4911: If a tunable of the form NAME=NAME=VAL is passed in the environment of a setuid program and NAME is valid, it may result in a buffer overflow, which could be exploited to achieve escalated privileges. This flaw was introduced in glibc 2.34.
CVE-2023-4806: When an NSS plugin only implements the _gethostbyname2_r and _getcanonname_r callbacks, getaddrinfo could use memory that was freed during buffer resizing, potentially causing a crash or read or write to arbitrary memory.
CVE-2023-4527: If the system is configured in no-aaaa mode via /etc/resolv.conf, getaddrinfo is called for the AF_UNSPEC address family, and a DNS response is received over TCP that is larger than 2048 bytes, getaddrinfo may potentially disclose stack contents via the returned address data, or crash.
