Redhat Enterprise Linux vulnerabilities

CVE-2026-34002 [CRITICAL] CWE-805 CVE-2026-34002: A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB ( A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive

CVE-2019-3878 [HIGH] CWE-305 CVE-2019-3878: A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse pr A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authenticatio

CVE-2025-5318 [HIGH] CWE-125 CVE-2025-5318: A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be tr A flaw was found in the libssh library in versions less than 0.11.2. An out-of-bounds read can be triggered in the sftp_handle function due to an incorrect comparison check that permits the function to access memory beyond the valid handle list and to return an invalid pointer, which is used in further processing. This vulnerability allows an authentica

CVE-2021-20232 [CRITICAL] CWE-416 CVE-2021-20232: A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.

CVE-2026-102557 [HIGH] CWE-125 CVE-2026-102557: A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libs A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that caused size truncation while the implementation still used the full length, leading to heap corruption or a crash.

CVE-2013-1773 [MEDIUM] CWE-119 CVE-2013-1773: Buffer overflow in the VFAT filesystem implementation in the Linux kernel before 3.3 allows local us Buffer overflow in the VFAT filesystem implementation in the Linux kernel before 3.3 allows local users to gain privileges or cause a denial of service (system crash) via a VFAT write operation on a filesystem with the utf8 mount option, which is not properly handled during UTF-8 to UTF-16 conversion.

CVE-2016-6170 [MEDIUM] CWE-20 CVE-2016-6170: ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denia

CVE-2019-3883 [HIGH] CWE-772 CVE-2019-3883: In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could r

CVE-2022-1949 [HIGH] CWE-639 CVE-2022-1949: An access control bypass vulnerability found in 389-ds-base. That mishandling of the filter that wou An access control bypass vulnerability found in 389-ds-base. That mishandling of the filter that would yield incorrect results, but as that has progressed, can be determined that it actually is an access control bypass. This may allow any remote unauthenticated user to issue a filter that allows searching for database items they do not have access to, i

CVE-2026-50258 [HIGH] CVE-2026-50258: A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has mu A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an inc

CVE-2026-50264 [HIGH] CWE-787 CVE-2026-50264: An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuff An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the server, or for privilege escalation if the X server runs as root.

CVE-2022-1587 [CRITICAL] CWE-125 CVE-2022-1587: An out-of-bounds read vulnerability was discovered in the PCRE2 library in the get_recurse_data_leng An out-of-bounds read vulnerability was discovered in the PCRE2 library in the get_recurse_data_length() function of the pcre2_jit_compile.c file. This issue affects recursions in JIT-compiled regular expressions caused by duplicate data transfers.

CVE-2014-8158 [MEDIUM] CWE-119 CVE-2014-8158: Multiple stack-based buffer overflows in jpc_qmfb.c in JasPer 1.900.1 and earlier allow remote attac Multiple stack-based buffer overflows in jpc_qmfb.c in JasPer 1.900.1 and earlier allow remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a crafted JPEG 2000 image.

CVE-2026-11788 [HIGH] CWE-476 CVE-2026-11788: A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocati A flaw was found in 389 Directory Server. The dereference control plugin does not check for allocation failure before using a BER structure, allowing an unauthenticated remote attacker to crash the LDAP server when the system is under memory pressure.

CVE-2019-17631 [CRITICAL] CWE-285 CVE-2019-17631: From Eclipse OpenJ9 0.15 to 0.16, access to diagnostic operations such as causing a GC or creating a From Eclipse OpenJ9 0.15 to 0.16, access to diagnostic operations such as causing a GC or creating a diagnostic file are permitted without any privilege checks.

CVE-2011-3631 [HIGH] CWE-190 CVE-2011-3631: Hardlink before 0.1.2 has multiple integer overflows leading to heap-based buffer overflows because Hardlink before 0.1.2 has multiple integer overflows leading to heap-based buffer overflows because of the way string lengths concatenation is done in the calculation of the required memory space to be used. A remote attacker could provide a specially-crafted directory tree and trick the local user into consolidating it, leading to hardlink executable cr

CVE-2022-0918 [HIGH] CVE-2022-0918: A vulnerability was discovered in the 389 Directory Server that allows an unauthenticated attacker w A vulnerability was discovered in the 389 Directory Server that allows an unauthenticated attacker with network access to the LDAP port to cause a denial of service. The denial of service is triggered by a single message sent over a TCP connection, no bind or other authentication is required. The message triggers a segmentation fault that results in slapd crash

CVE-2010-4664 [HIGH] CWE-269 CVE-2010-4664: In ConsoleKit before 0.4.2, an intended security policy restriction bypass was found. This flaw allo In ConsoleKit before 0.4.2, an intended security policy restriction bypass was found. This flaw allows an authenticated system user to escalate their privileges by initiating a remote VNC session.

CVE-2019-14821 [HIGH] CWE-787 CVE-2019-14821: An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Li An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process.

CVE-2022-4904 [HIGH] CWE-20 CVE-2022-4904: A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity o A flaw was found in the c-ares package. The ares_set_sortlist is missing checks about the validity of the input string, which allows a possible arbitrary length stack overflow. This issue may cause a denial of service or a limited impact on confidentiality and integrity.