Vulnerabilidades do Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

CVE-2026-4948 Média · 5.5 CWE-279 27/03/2026

Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

CVE-2026-4775 Alta · 7.8 CWE-190 24/03/2026

Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing

A flaw was found in the libtiff library. A remote attacker could exploit a signed integer overflow vulnerability in the putcontig8bitYCbCr44tile function by providing a specially crafted TIFF file. This flaw can lead to an out-of-bounds heap write due to incorrect memory pointer calculations, potentially causing a denial of service (application crash) or arbitrary code execution.

CVE-2026-4424 Alta · 7.5 CWE-125 19/03/2026

Libarchive: libarchive: information disclosure via heap out-of-bounds read in rar archive processing

A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.

CVE-2026-4271 Alta · 7.5 CWE-416 17/03/2026

Libsoup: libsoup: denial of service via use-after-free in http/2 server

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).

CVE-2026-4111 Alta · 7.5 CWE-835 13/03/2026

Libarchive: infinite loop denial of service in rar5 decompression via archive_read_data() in libarchive

A flaw was identified in the RAR5 archive decompression logic of the libarchive library, specifically within the archive_read_data() processing path. When a specially crafted RAR5 archive is processed, the decompression routine may enter a state where internal logic prevents forward progress. This condition results in an infinite loop that continuously consumes CPU resources. Because the archive passes checksum validation and appears structurally valid, affected applications cannot detect the issue before processing. This can allow attackers to cause persistent denial-of-service conditions in services that automatically process archives.

CVE-2026-26104 Média · 5.5 CWE-862 25/02/2026

Udisks: missing authorization check allows unprivileged users to back up luks headers via udisks d-bus api

A flaw was found in the udisks storage management daemon that allows unprivileged users to back up LUKS encryption headers without authorization. The issue occurs because a privileged D-Bus method responsible for exporting encryption metadata does not perform a policy check. As a result, sensitive cryptographic metadata can be read and written to attacker-controlled locations. This weakens the confidentiality guarantees of encrypted storage volumes.

CVE-2026-26103 Alta · 7.1 CWE-862 25/02/2026

Udisks: missing authorization check allows unprivileged users to restore luks headers via udisks d-bus api

A flaw was found in the udisks storage management daemon that exposes a privileged D-Bus API for restoring LUKS encryption headers without proper authorization checks. The issue allows a local unprivileged user to instruct the root-owned udisks daemon to overwrite encryption metadata on block devices. This can permanently invalidate encryption keys and render encrypted volumes inaccessible. Successful exploitation results in a denial-of-service condition through irreversible data loss.

CVE-2025-14905 Alta · 7.2 CWE-122 23/02/2026

389-ds-base: 389-ds-base: remote code execution and denial of service via heap buffer overflow

A flaw was found in the 389-ds-base server. A heap buffer overflow vulnerability exists in the `schema_attr_enum_callback` function within the `schema.c` file. This occurs because the code incorrectly calculates the buffer size by summing alias string lengths without accounting for additional formatting characters. When a large number of aliases are processed, this oversight can lead to a heap overflow, potentially allowing a remote attacker to cause a Denial of Service (DoS) or achieve Remote Code Execution (RCE).

CVE-2025-14831 Média · 5.3 CWE-407 09/02/2026

Gnutls: gnutls: denial of service via excessive resource consumption during certificate verification

A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).

CVE-2026-1709 Crítica · 9.8 CWE-322 06/02/2026

Bypass de autenticação TLS de cliente no registrador do Keylime (CVE-2026-1709)

Foi identificada uma falha no Keylime. O registrador (registrar) do Keylime, desde a versão 7.12.0, não impõe a autenticação TLS do lado do cliente. Esta vulnerabilidade de bypass de autenticação permite que clientes não autenticados com acesso à rede realizem operações administrativas, incluindo listar agentes, obter dados públicos do Trusted Platform Module (TPM) e excluir agentes, ao conectar sem apresentar um certificado de cliente.

CVE-2026-1761 Alta · 8.6 CWE-121 02/02/2026

Libsoup: stack-based buffer overflow in libsoup multipart response parsingmultipart http response

A flaw was found in libsoup. This stack-based buffer overflow vulnerability occurs during the parsing of multipart HTTP responses due to an incorrect length calculation. A remote attacker can exploit this by sending a specially crafted multipart HTTP response, which can lead to memory corruption. This issue may result in application crashes or arbitrary code execution in applications that process untrusted server responses, and it does not require authentication or user interaction.

CVE-2025-14242 Média · 6.5 CWE-190 14/01/2026

Vsftpd: vsftpd: denial of service via integer overflow in ls command parameter parsing

A flaw was found in vsftpd. This vulnerability allows a denial of service (DoS) via an integer overflow in the ls command parameter parsing, triggered by a remote, authenticated attacker sending a crafted STAT command with a specific byte sequence.

CVE-2026-0719 Alta · 8.6 CWE-121 08/01/2026

Libsoup: signed to unsigned conversion error leading to stack-based buffer overflow in libsoup ntlm authentication

A flaw was identified in the NTLM authentication handling of the libsoup HTTP library, used by GNOME and other applications for network communication. When processing extremely long passwords, an internal size calculation can overflow due to improper use of signed integers. This results in incorrect memory allocation on the stack, followed by unsafe memory copying. As a result, applications using libsoup may crash unexpectedly, creating a denial-of-service risk.

CVE-2025-14523 Alta · 8.2 CWE-444 11/12/2025

Libsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)

A flaw in libsoup’s HTTP header handling allows multiple Host: headers in a request and returns the last occurrence for server-side processing. Common front proxies often honor the first Host: header, so this mismatch can cause vhost confusion where a proxy routes a request to one backend but the backend interprets it as destined for another host. This discrepancy enables request-smuggling style attacks, cache poisoning, or bypassing host-based access controls when an attacker supplies duplicate Host headers.

CVE-2025-14512 Média · 6.5 CWE-190 11/12/2025

Glib: integer overflow in glib gio attribute escaping causes heap buffer overflow

A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.

CVE-2025-14087 Crítica · 9.8 CWE-190 10/12/2025

Glib: glib: buffer underflow in gvariant parser leads to heap corruption

A flaw was found in GLib (Gnome Lib). This vulnerability allows a remote attacker to cause heap corruption, leading to a denial of service or potential code execution via a buffer-underflow in the GVariant parser when processing maliciously crafted input strings.

CVE-2025-13601 Alta · 7.7 CWE-190 26/11/2025

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.

CVE-2025-13609 Alta · 8.2 CWE-694 24/11/2025

Keylime: keylime: registrar allows identity takeover via duplicate uuid registration

A vulnerability has been identified in keylime where an attacker can exploit this flaw by registering a new agent using a different Trusted Platform Module (TPM) device but claiming an existing agent's unique identifier (UUID). This action overwrites the legitimate agent's identity, enabling the attacker to impersonate the compromised agent and potentially bypass security controls.

CVE-2025-61662 Alta · 7.8 CWE-416 18/11/2025

Grub2: missing unregister call for gettext command may lead to use-after-free

A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.

CVE-2025-59089 Média · 5.9 CWE-770 12/11/2025

Python-kdcproxy: remote dos via unbounded tcp upstream buffering

If an attacker causes kdcproxy to connect to an attacker-controlled KDC server (e.g. through server-side request forgery), they can exploit the fact that kdcproxy does not enforce bounds on TCP response length to conduct a denial-of-service attack. While receiving the KDC's response, kdcproxy copies the entire buffered stream into a new buffer on each recv() call, even when the transfer is incomplete, causing excessive memory allocation and CPU usage. Additionally, kdcproxy accepts incoming response chunks as long as the received data length is not exactly equal to the length indicated in the response header, even when individual chunks or the total buffer exceed the maximum length of a Kerberos message. This allows an attacker to send unbounded data until the connection timeout is reached (approximately 12 seconds), exhausting server memory or CPU resources. Multiple concurrent requests can cause accept queue overflow, denying service to legitimate clients.

CVE-2025-59088 Alta · 8.6 CWE-918 12/11/2025

Python-kdcproxy: unauthenticated ssrf via realm‑controlled dns srv

If kdcproxy receives a request for a realm which does not have server addresses defined in its configuration, by default, it will query SRV records in the DNS zone matching the requested realm name. This creates a server-side request forgery vulnerability, since an attacker could send a request for a realm matching a DNS zone where they created SRV records pointing to arbitrary ports and hostnames (which may resolve to loopback or internal IP addresses). This vulnerability can be exploited to probe internal network topology and firewall rules, perform port scanning, and exfiltrate data. Deployments where the "use_dns" setting is explicitly set to false are not affected.

CVE-2025-12105 Alta · 7.5 CWE-416 23/10/2025

Libsoup: heap use-after-free in libsoup message queue handling during http/2 read completion

A flaw was found in the asynchronous message queue handling of the libsoup library, widely used by GNOME and WebKit-based applications to manage HTTP/2 communications. When network operations are aborted at specific timing intervals, an internal message queue item may be freed twice due to missing state synchronization. This leads to a use-after-free memory access, potentially crashing the affected application. Attackers could exploit this behavior remotely by triggering specific HTTP/2 read and cancel sequences, resulting in a denial-of-service condition.

CVE-2025-10911 Média · 5.5 CWE-825 25/09/2025

Libxslt: use-after-free with key data stored cross-rvt

A use-after-free vulnerability was found in libxslt while parsing xsl nodes that may lead to the dereference of expired pointers and application crash.

CVE-2025-5987 Alta · 8.1 CWE-393 07/07/2025

Libssh: invalid return code for chacha20 poly1305 with openssl backend

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with the SSH_OK code, resulting in libssh not properly detecting the error returned by the OpenSSL library. This issue can lead to undefined behavior, including compromised data confidentiality and integrity or crashes.

CVE-2025-6020 Alta · 7.8 CWE-22 17/06/2025

Linux-pam: linux-pam directory traversal

A flaw was found in linux-pam. The module pam_namespace may use access user-controlled paths without proper protection, allowing local users to elevate their privileges to root via multiple symlink attacks and race conditions.