CVE-2023-4527

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

• glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911)

• glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527)

• glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)

• glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

• glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911)
• glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527)
• glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)
• glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es):

• glibc: buffer overflow in ld.so leading to privilege escalation (CVE-2023-4911)
• glibc: Stack read overflow in getaddrinfo in no-aaaa mode (CVE-2023-4527)
• glibc: potential use-after-free in getaddrinfo() (CVE-2023-4806)
• glibc: potential use-after-free in gaih_inet() (CVE-2023-4813)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

getaddrinfo: Fix use after free in getcanonname (CVE-2023-4806)

Stack read overflow with large TCP responses in no-aaaa mode (CVE-2023-4527)

elf: Introduce to _dl_call_fini elf: Do not run constructors for proxy objects elf: Always call destructors in reverse constructor order [BZ #30785] elf: Remove unused l_text_end field from struct link_map elf: Move l_init_called_next to old place of l_text_end in link map elf: Fix slow tls access after dlopen [BZ #19924] intl: Treat C.UTF-8 locale like C locale [BZ# 16621] x86: Increase non_temporal_threshold to roughly "sizeof_L3 / 4" x86: Fix slight bug in shared_per_thread cache size calculation x86: Use 3/4*sizeof(per-thread-L3) as low bound for NT threshold x86: Fix incorrect scope of setting shared_per_thread [BZ #30745]

These are all security issues fixed in the glibc-2.38-3.1 package on the GA media of openSUSE Tumbleweed.