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CVE-2023-4527

Glibc: stack read overflow in getaddrinfo in no-aaaa mode

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.

CVSS 3.1 · 6.5 Medium EPSS 1.7% KEV · Not listed
Vendors
Fedoraproject Gnu Netapp and 1 more
Products
Fedora Glibc H300s and 30 more
CVE-2023-4911

Glibc: buffer overflow in ld.so leading to privilege escalation

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.

CVSS 3.1 · 7.8 High EPSS 63.8% KEV · Listed
Vendors
Canonical Debian Fedoraproject and 4 more
Products
Ubuntu Linux Debian Linux Fedora and 49 more
CVE-2023-3758

Sssd: race condition during authorization leads to gpo policies functioning inconsistently

A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.

CVSS 3.1 · 7.1 High EPSS 1.0% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Fedora Sssd Codeready Linux Builder and 23 more
CVE-2023-4806

Glibc: potential use-after-free in getaddrinfo()

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.

CVSS 3.1 · 5.9 Medium EPSS 1.6% KEV · Not listed
Vendors
Fedoraproject Gnu Redhat
Products
Fedora Glibc Codeready Linux Builder Eus and 22 more
CVE-2023-5870

Postgresql: role pg_signal_backend can signal certain superuser processes.

A flaw was found in PostgreSQL involving the pg_cancel_backend role that signals background workers, including the logical replication launcher, autovacuum workers, and the autovacuum launcher. Successful exploitation requires a non-core extension with a less-resilient background worker and would affect that specific background worker only. This issue may allow a remote high privileged user to launch a denial of service (DoS) attack.

CVSS 3.1 · 2.2 Low EPSS 2.6% KEV · Not listed
Vendors
Postgresql Redhat
Products
Postgresql Advanced Cluster Security Codeready Linux Builder Eus and 20 more
CVE-2025-2784

Libsoup: heap buffer over-read in `skip_insignificant_space` when sniffing content

A flaw was found in libsoup. The package is vulnerable to a heap buffer over-read when sniffing content via the skip_insight_whitespace() function. Libsoup clients may read one byte out-of-bounds in response to a crafted HTTP response by an HTTP server.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Gnome Redhat
Products
Libsoup Codeready Linux Builder Codeready Linux Builder For Arm64 and 23 more
CVE-2025-13601

Glib: integer overflow in in g_escape_uri_string()

A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Gnome Redhat
Products
Glib Ceph Storage Codeready Linux Builder and 38 more
CVE-2023-6915

Kernel: null pointer dereference vulnerability in ida_free in lib/idr.c

A Null pointer dereference problem was found in ida_free in lib/idr.c in the Linux Kernel. This issue may allow an attacker using this library to cause a denial of service problem due to a missing check at a function return.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Codeready Linux Builder and 22 more
CVE-2023-6536

Kernel: null pointer dereference in __nvmet_req_complete

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

CVSS 3.1 · 6.5 Medium EPSS 1.5% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Codeready Linux Builder Eus and 18 more
CVE-2023-6535

Kernel: null pointer dereference in nvmet_tcp_execute_request

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver, causing kernel panic and a denial of service.

CVSS 3.1 · 6.5 Medium EPSS 1.5% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Codeready Linux Builder Eus Codeready Linux Builder Eus For Power Little Endian Eus and 17 more
CVE-2023-6356

Kernel: null pointer dereference in nvmet_tcp_build_iovec

A flaw was found in the Linux kernel's NVMe driver. This issue may allow an unauthenticated malicious actor to send a set of crafted TCP packages when using NVMe over TCP, leading the NVMe driver to a NULL pointer dereference in the NVMe driver and causing kernel panic and a denial of service.

CVSS 3.1 · 6.5 Medium EPSS 1.4% KEV · Not listed
Vendors
Debian Linux Redhat
Products
Debian Linux Linux Kernel Codeready Linux Builder Eus and 18 more
CVE-2023-5868

Postgresql: memory disclosure in aggregate function calls

A memory disclosure vulnerability was found in PostgreSQL that allows remote users to access sensitive information by exploiting certain aggregate function calls with 'unknown'-type arguments. Handling 'unknown'-type values from string literals without type designation can disclose bytes, potentially revealing notable and confidential information. This issue exists due to excessive data output in aggregate function calls, enabling remote users to read some portion of system memory.

CVSS 3.1 · 4.3 Medium EPSS 2.8% KEV · Not listed
Vendors
Postgresql Redhat
Products
Postgresql Advanced Cluster Security Codeready Linux Builder Eus and 20 more
CVE-2025-3155

Yelp: arbitrary file read

A flaw was found in Yelp. The Gnome user help application allows the help document to execute arbitrary scripts. This vulnerability allows malicious users to input help documents, which may exfiltrate user files to an external environment.

CVSS 3.1 · 7.4 High EPSS 13.1% KEV · Not listed
Vendors
Debian Gnome Redhat
Products
Debian Linux Yelp Codeready Linux Builder and 23 more
CVE-2024-0193

Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Codeready Linux Builder Codeready Linux Builder For Eus and 24 more
CVE-2024-1488

Unbound: unrestricted reconfiguration enabled to anyone that may lead to local privilege escalation

A vulnerability was found in Unbound due to incorrect default permissions, allowing any process outside the unbound group to modify the unbound runtime configuration. If a process can connect over localhost to port 8953, it can alter the configuration of unbound.service. This flaw allows an unprivileged attacker to manipulate a running instance, potentially altering forwarders, allowing them to track all queries forwarded by the local resolver, and, in some cases, disrupting resolving altogether.

CVSS 3.1 · 8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Unbound Codeready Linux Builder Codeready Linux Builder Eus and 21 more
CVE-2023-5869

Postgresql: buffer overrun from integer overflow in array modification

A flaw was found in PostgreSQL that allows authenticated database users to execute arbitrary code through missing overflow checks during SQL array value modification. This issue exists due to an integer overflow during array modification where a remote user can trigger the overflow by providing specially crafted data. This enables the execution of arbitrary code on the target system, allowing users to write arbitrary bytes to memory and extensively read the server's memory.

CVSS 3.1 · 8.8 High EPSS 4.3% KEV · Not listed
Vendors
Postgresql Redhat
Products
Postgresql Advanced Cluster Security Codeready Linux Builder Eus and 25 more
CVE-2023-5633

Kernel: vmwgfx: reference count issue leads to use-after-free in surface handling

The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use-after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Linux Redhat
Products
Linux Kernel Codeready Linux Builder Codeready Linux Builder Eus and 21 more
CVE-2021-3737

python: urllib: HTTP client possible infinite loop on a 100 Continue response

A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

CVSS 3.1 · 7.5 High EPSS 13.2% KEV · Not listed
Vendors
Canonical Fedoraproject Netapp and 3 more
Products
Ubuntu Linux Fedora Hci and 15 more
CVE-2021-3733

python: urllib: Regular expression DoS in AbstractBasicAuthHandler

There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.

CVSS 3.1 · 6.5 Medium EPSS 4.8% KEV · Not listed
Vendors
Fedoraproject Netapp Python and 1 more
Products
Extra Packages For Enterprise Linux Fedora Hci Compute Node Firmware and 18 more