Vulnerabilities (CVE)

Filtered by vendor Gnu Subscribe
Filtered by product Glibc
Total 166 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-1751 3 Canonical, Gnu, Redhat 3 Ubuntu Linux, Glibc, Enterprise Linux 2026-10-14 5.9 MEDIUM 5.1 MEDIUM
An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.
CVE-2020-10029 6 Canonical, Debian, Fedoraproject and 3 more 12 Ubuntu Linux, Debian Linux, Fedora and 9 more 2026-10-14 2.1 LOW 5.5 MEDIUM
The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.
CVE-2019-25013 5 Broadcom, Debian, Fedoraproject and 2 more 10 Fabric Operating System, Debian Linux, Fedora and 7 more 2026-10-14 7.1 HIGH 5.9 MEDIUM
The iconv feature in the GNU C Library (aka glibc or libc6) through 2.32, when processing invalid multi-byte input sequences in the EUC-KR encoding, may have a buffer over-read.
CVE-2019-1010025 1 Gnu 1 Glibc 2026-10-14 5.0 MEDIUM 5.3 MEDIUM
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability.
CVE-2019-1010024 1 Gnu 1 Glibc 2026-10-14 5.0 MEDIUM 5.3 MEDIUM
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
CVE-2019-1010023 1 Gnu 1 Glibc 2026-10-14 6.8 MEDIUM 5.4 MEDIUM
GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
CVE-2019-1010022 1 Gnu 1 Glibc 2026-10-14 7.5 HIGH 9.8 CRITICAL
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
CVE-2019-9169 4 Canonical, Gnu, Mcafee and 1 more 6 Ubuntu Linux, Glibc, Web Gateway and 3 more 2026-10-14 7.5 HIGH 9.8 CRITICAL
In the GNU C Library (aka glibc or libc6) through 2.29, proceed_next_node in posix/regexec.c has a heap-based buffer over-read via an attempted case-insensitive regular-expression match.
CVE-2019-7309 1 Gnu 1 Glibc 2026-10-14 2.1 LOW 5.5 MEDIUM
In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
CVE-2019-6488 1 Gnu 1 Glibc 2026-10-14 4.6 MEDIUM 7.8 HIGH
The string component in the GNU C Library (aka glibc or libc6) through 2.28, when running on the x32 architecture, incorrectly attempts to use a 64-bit register for size_t in assembly codes, which can lead to a segmentation fault or possibly unspecified other impact, as demonstrated by a crash in __memmove_avx_unaligned_erms in sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S during a memcpy.
CVE-2019-19126 4 Canonical, Debian, Fedoraproject and 1 more 4 Ubuntu Linux, Debian Linux, Fedora and 1 more 2026-10-14 2.1 LOW 3.3 LOW
On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
CVE-2018-19591 2 Fedoraproject, Gnu 2 Fedora, Glibc 2026-10-14 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-2016-10739 2 Gnu, Opensuse 2 Glibc, Leap 2026-10-14 4.6 MEDIUM 5.3 MEDIUM
In the GNU C Library (aka glibc or libc6) through 2.28, the getaddrinfo function would successfully parse a string that contained an IPv4 address followed by whitespace and arbitrary characters, which could lead applications to incorrectly assume that it had parsed a valid string, without the possibility of embedded HTTP headers or other potentially dangerous substrings.
CVE-2016-10228 1 Gnu 1 Glibc 2026-10-14 4.3 MEDIUM 5.9 MEDIUM
The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service.
CVE-1999-0199 1 Gnu 1 Glibc 2026-09-25 7.5 HIGH 9.8 CRITICAL
manual/search.texi in the GNU C Library (aka glibc) before 2.2 lacks a statement about the unspecified tdelete return value upon deletion of a tree's root, which might allow attackers to access a dangling pointer in an application whose developer was unaware of a documentation update from 1999.
CVE-2000-0959 1 Gnu 1 Glibc 2026-09-23 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-2023-4806 3 Fedoraproject, Gnu, Redhat 22 Fedora, Glibc, Codeready Linux Builder Eus and 19 more 2026-07-14 N/A 5.9 MEDIUM
A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_r and _nss_*_getcanonname_r hooks without implementing the _nss_*_gethostbyname3_r hook. The resolved name should return a large number of IPv6 and IPv4, and the call to the getaddrinfo function should have the AF_INET6 address family with AI_CANONNAME, AI_ALL and AI_V4MAPPED as flags.
CVE-2026-6238 1 Gnu 1 Glibc 2026-07-14 N/A 6.5 MEDIUM
The deprecated functions ns_printrrf, ns_printrr and fp_nquery in the GNU C Library version 2.0.1 to version 2.43 fail to validate the RDATA content against the RDATA length in a DNS response when processing A6, CERT, LOC, TKEY or TSIG records, which may allow an attacker to craft a DNS response, causing a target application to crash or read uninitialized memory. These functions are for application debugging only and hence not in the path of code executed by the DNS resolver. Further, they have been deprecated since version 2.34 and should not be used by any new applications. Applications should consider porting away from these interfaces since they may be removed in future versions.
CVE-2026-5928 1 Gnu 1 Glibc 2026-07-14 N/A 7.5 HIGH
Calling the ungetwc function on a FILE stream with wide characters encoded in a character set that has overlaps between its single byte and multi-byte character encodings, in the GNU C Library version 2.43 or earlier, may result in an attempt to read bytes before an allocated buffer, potentially resulting in unintentional disclosure of neighboring data in the heap, or a program crash. A bug in the wide character pushback implementation (_IO_wdefault_pbackfail in libio/wgenops.c) causes ungetwc() to operate on the regular character buffer (fp->_IO_read_ptr) instead of the actual wide-stream read pointer (fp->_wide_data->_IO_read_ptr). The program crash may happen in cases where fp->_IO_read_ptr is not initialized and hence points to NULL. The buffer under-read requires a special situation where the input character encoding is such that there are overlaps between single byte representations and multibyte representations in that encoding, resulting in spurious matches. The spurious match case is not possible in the standard Unicode character sets.
CVE-2026-5450 1 Gnu 1 Glibc 2026-07-14 N/A 9.8 CRITICAL
Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.