Vulnerabilities (CVE)

Filtered by vendor Gnu Subscribe
Filtered by product Glibc
Total 164 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2000-0959 1 Gnu 1 Glibc 2026-04-16 1.2 LOW N/A
glibc2 does not properly clear the LD_DEBUG_OUTPUT and LD_DEBUG environmental variables when a program is spawned from a setuid program, which could allow local users to overwrite files via a symlink attack.
CVE-2000-0824 1 Gnu 1 Glibc 2026-04-16 7.2 HIGH N/A
The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program, which could allow local users to execute arbitrary commands in setuid programs by specifying their own duplicate environmental variables such as LD_PRELOAD or LD_LIBRARY_PATH.
CVE-2004-1382 1 Gnu 1 Glibc 2026-04-16 2.1 LOW N/A
The glibcbug script in glibc 2.3.4 and earlier allows local users to overwrite arbitrary files via a symlink attack on temporary files, a different vulnerability than CVE-2004-0968.
CVE-2004-1453 1 Gnu 1 Glibc 2026-04-16 2.1 LOW N/A
GNU glibc 2.3.4 before 2.3.4.20040619, 2.3.3 before 2.3.3.20040420, and 2.3.2 before 2.3.2-r10 does not restrict the use of LD_DEBUG for a setuid program, which allows local users to gain sensitive information, such as the list of symbols used by the program.
CVE-2002-1146 1 Gnu 1 Glibc 2026-04-16 5.0 MEDIUM N/A
The BIND 4 and BIND 8.2.x stub resolver libraries, and other libraries such as glibc 2.2.5 and earlier, libc, and libresolv, use the maximum buffer size instead of the actual size when processing a DNS response, which causes the stub resolvers to read past the actual boundary ("read buffer overflow"), allowing remote attackers to cause a denial of service (crash).
CVE-2003-0028 10 Cray, Freebsd, Gnu and 7 more 13 Unicos, Freebsd, Glibc and 10 more 2026-04-16 7.5 HIGH N/A
Integer overflow in the xdrmem_getbytes() function, and possibly other functions, of XDR (external data representation) libraries derived from SunRPC, including libnsl, libc, glibc, and dietlibc, allows remote attackers to execute arbitrary code via certain integer values in length fields, a different vulnerability than CVE-2002-0391.
CVE-2002-1265 3 Apple, Gnu, Sgi 4 Mac Os X, Mac Os X Server, Glibc and 1 more 2026-04-16 5.0 MEDIUM N/A
The Sun RPC functionality in multiple libc implementations does not provide a time-out mechanism when reading data from TCP connections, which allows remote attackers to cause a denial of service (hang).
CVE-2003-0859 5 Gnu, Intel, Quagga and 2 more 7 Glibc, Zebra, Ia64 and 4 more 2026-04-16 4.9 MEDIUM N/A
The getifaddrs function in GNU libc (glibc) 2.2.4 and earlier allows local users to cause a denial of service by sending spoofed messages as other users to the kernel netlink interface.
CVE-2002-0684 2 Gnu, Isc 2 Glibc, Bind 2026-04-16 7.5 HIGH N/A
Buffer overflow in DNS resolver functions that perform lookup of network names and addresses, as used in BIND 4.9.8 and ported to glibc 2.2.5 and earlier, allows remote malicious DNS servers to execute arbitrary code through a subroutine used by functions such as getnetbyname and getnetbyaddr.
CVE-2026-3904 1 Gnu 1 Glibc 2026-04-09 N/A 6.2 MEDIUM
Calling NSS-backed functions that support caching via nscd may call the nscd client side code and in the GNU C Library version 2.36 under high load on x86_64 systems, the client may call memcmp on inputs that are concurrently modified by other processes or threads and crash. The nscd client in the GNU C Library uses the memcmp function with inputs that may be concurrently modified by another thread, potentially resulting in spurious cache misses, which in itself is not a security issue.  However in the GNU C Library version 2.36 an optimized implementation of memcmp was introduced for x86_64 which could crash when invoked with such undefined behaviour, turning this into a potential crash of the nscd client and the application that uses it. This implementation was backported to the 2.35 branch, making the nscd client in that branch vulnerable as well.  Subsequently, the fix for this issue was backported to all vulnerable branches in the GNU C Library repository. It is advised that distributions that may have cherry-picked the memcpy SSE2 optimization in their copy of the GNU C Library, also apply the fix to avoid the potential crash in the nscd client.
CVE-2026-4437 1 Gnu 1 Glibc 2026-04-07 N/A 7.5 HIGH
Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C Library version 2.34 to version 2.43 could, with a crafted response from the configured DNS server, result in a violation of the DNS specification that causes the application to treat a non-answer section of the DNS response as a valid answer.
CVE-2026-4438 1 Gnu 1 Glibc 2026-04-07 N/A 5.4 MEDIUM
Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.
CVE-2024-2961 3 Debian, Gnu, Netapp 21 Debian Linux, Glibc, Active Iq Unified Manager and 18 more 2026-04-03 N/A 7.3 HIGH
The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.
CVE-2023-4911 6 Canonical, Debian, Fedoraproject and 3 more 41 Ubuntu Linux, Debian Linux, Fedora and 38 more 2026-02-13 N/A 7.8 HIGH
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
CVE-2021-35942 3 Debian, Gnu, Netapp 7 Debian Linux, Glibc, Active Iq Unified Manager and 4 more 2026-02-13 6.4 MEDIUM 9.1 CRITICAL
The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.
CVE-2025-15281 1 Gnu 1 Glibc 2026-02-05 N/A 7.5 HIGH
Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on subsequent calls to wordfree may abort the process.
CVE-2026-0861 1 Gnu 1 Glibc 2026-02-03 N/A 8.4 HIGH
Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign, aligned_alloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could consequently result in a heap corruption. Note that the attacker must have control over both, the size as well as the alignment arguments of the memalign function to be able to exploit this. The size parameter must be close enough to PTRDIFF_MAX so as to overflow size_t along with the large alignment argument. This limits the malicious inputs for the alignment for memalign to the range [1<<62+ 1, 1<<63] and exactly 1<<63 for posix_memalign and aligned_alloc. Typically the alignment argument passed to such functions is a known constrained quantity (e.g. page size, block size, struct sizes) and is not attacker controlled, because of which this may not be easily exploitable in practice. An application bug could potentially result in the input alignment being too large, e.g. due to a different buffer overflow or integer overflow in the application or its dependent libraries, but that is again an uncommon usage pattern given typical sources of alignments.
CVE-2026-0915 1 Gnu 1 Glibc 2026-01-23 N/A 7.5 HIGH
Calling getnetbyaddr or getnetbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend for networks and queries for a zero-valued network in the GNU C Library version 2.0 to version 2.42 can leak stack contents to the configured DNS resolver.
CVE-2018-19591 2 Fedoraproject, Gnu 2 Fedora, Glibc 2025-12-03 5.0 MEDIUM 7.5 HIGH
In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
CVE-2021-3999 3 Debian, Gnu, Netapp 15 Debian Linux, Glibc, E-series Performance Analyzer and 12 more 2025-12-02 N/A 7.8 HIGH
A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.