Red Hat Openshift

QEMU VMDK OOB Read Leak or DoS
CVE-2026-2243 5.1 - Medium - February 19, 2026

A flaw was found in QEMU. A specially crafted VMDK image could trigger an out-of-bounds read vulnerability, potentially leading to a 12-byte leak of sensitive information or a denial of service condition (DoS).

Out-of-bounds Read

QEMU KVM Xen Guest Off-By-One heap OOB access in Xen physdev
CVE-2026-0665 6.5 - Medium - February 18, 2026

An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.

Memory Corruption

QEMU uefi-vars Buffer Size vs Transfer I/O Info Leak
CVE-2025-8860 3.3 - Low - February 18, 2026

A flaw was found in QEMU in the uefi-vars virtual device. When the guest writes to register UEFI_VARS_REG_BUFFER_SIZE, the .write callback `uefi_vars_write` is invoked. The function allocates a heap buffer without zeroing the memory, leaving the buffer filled with residual data from prior allocations. When the guest later reads from register UEFI_VARS_REG_PIO_BUFFER_TRANSFER, the .read callback `uefi_vars_read` returns leftover metadata or other sensitive process memory from the previously allocated buffer, leading to an information disclosure vulnerability.

Improper Removal of Sensitive Information Before Storage or Transfer

QEMU virtio-crypto AKCIPHER DoS via unchecked memory allocation
CVE-2025-14876 5.5 - Medium - February 18, 2026

A flaw was found in the virtio-crypto device of QEMU. A malicious guest operating system can exploit a missing length limit in the AKCIPHER path, leading to uncontrolled memory allocation. This can result in a denial of service (DoS) on the host system by causing the QEMU process to terminate unexpectedly.

Allocation of Resources Without Limits or Throttling

Fedora Linux: Kernel Lockdown Disabled, Unsigned Module Loading
CVE-2025-1272 7.7 - High - February 18, 2026

The Linux Kernel lockdown mode for kernel versions starting on 6.12 and above for Fedora Linux has the lockdown mode disabled without any warning. This may allow an attacker to gain access to sensitive information such kernel memory mappings, I/O ports, BPF and kprobes. Additionally unsigned modules can be loaded, leading to execution of untrusted code breaking breaking any Secure Boot protection. This vulnerability affects only Fedora Linux.

GnuTLS DoS via oversized SANs in certificates
CVE-2025-14831 5.3 - Medium - February 09, 2026

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).

Inefficient Algorithmic Complexity

Memory Leak in libxml2 xmllint Shell Leads to Local DoS
CVE-2026-1757 6.2 - Medium - February 02, 2026

A flaw was identified in the interactive shell of the xmllint utility, part of the libxml2 project, where memory allocated for user input is not properly released under certain conditions. When a user submits input consisting only of whitespace, the program skips command execution but fails to free the allocated buffer. Repeating this action causes memory to continuously accumulate. Over time, this can exhaust system memory and terminate the xmllint process, creating a denial-of-service condition on the local system.

Memory Leak

GnuTLS Stack Buffer Overflow in PKCS#11 Init Allows DoS/Code Exec
CVE-2025-9820 4 - Medium - January 26, 2026

A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.

Stack Overflow

Privilege Escalation Vulnerability in NetworkManager (CVE-2025-9615)
CVE-2025-9615 - January 26, 2026

A flaw was found in NetworkManager. The NetworkManager package allows access to files that may belong to other users. NetworkManager allows non-root users to configure the system's network. The daemon runs with root privileges and can access files owned by users different from the one who added the connection.

Improper Preservation of Permissions

Information Disclosure in Go Viper Mapstructure WeakDecode via Error Messages
CVE-2025-11065 5.3 - Medium - January 26, 2026

A flaw was found in github.com/go-viper/mapstructure/v2, in the field processing component using mapstructure.WeakDecode. This vulnerability allows information disclosure through detailed error messages that may leak sensitive input values via malformed user-supplied data processed in security-critical contexts.

Generation of Error Message Containing Sensitive Information

libxml2 XML Catalog DoS via Repeated <nextCatalog> Recursion
CVE-2026-0992 2.9 - Low - January 15, 2026

A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.

Resource Exhaustion

Denial-of-Service via Unbounded <include> Recursion in libxml2 RelaxNG Parser
CVE-2026-0989 3.7 - Low - January 15, 2026

A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.

Stack Exhaustion

libxml2 Uncontrolled Recursion in xmlCatalogXMLResolveURI Causing DoS
CVE-2026-0990 5.9 - Medium - January 15, 2026

A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.

Stack Exhaustion

OpenShift API Server SSRF Enables Internal Network Enumeration
CVE-2025-14443 8.5 - High - December 16, 2025

A flaw was found in ose-openshift-apiserver. This vulnerability allows internal network enumeration, service discovery, limited information disclosure, and potential denial-of-service (DoS) through Server-Side Request Forgery (SSRF) due to missing IP address and network-range validation when processing user-supplied image references.

SSRF

glib GIO escape_byte_string overflow causes heap buffer DoS
CVE-2025-14512 6.5 - Medium - December 11, 2025

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.

Integer Overflow or Wraparound

Heap Buffer Overread in util-linux setpwnam() (256-byte usernames)
CVE-2025-14104 6.1 - Medium - December 05, 2025

A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.

Out-of-bounds Read

Glib Heap Buffer Overflow in g_escape_uri_string()
CVE-2025-13601 7.7 - High - November 26, 2025

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.

Integer Overflow or Wraparound

GRUB2 UAF in network module => DoS
CVE-2025-54770 4.9 - Medium - November 18, 2025

A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability

Dangling pointer

GRUB2 Normal Module UAF Can Crash or Leak Data
CVE-2025-61664 4.9 - Medium - November 18, 2025

A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.

Dangling pointer

GRUB2: UAF in normal command leads to DoS
CVE-2025-61663 4.9 - Medium - November 18, 2025

A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.

Dangling pointer

UAF in GRUB gettext module leads to denial of service
CVE-2025-61662 7.8 - High - November 18, 2025

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.

Dangling pointer

CVE-2025-61661: GRUB USB String Conv DoS
CVE-2025-61661 4.8 - Medium - November 18, 2025

A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.

Incorrect Calculation of Buffer Size

Use-After-Free in GNU GRUB Causes DoS via Invalid File Pointer
CVE-2025-54771 4.9 - Medium - November 18, 2025

A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. 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.

Dangling pointer

libxml2 xmlSetTreeDoc UAF via stale ns pointer
CVE-2025-12863 - November 07, 2025

Samba WINS Hook RCE via Unvalidated NetBIOS Names
CVE-2025-10230 10 - Critical - November 07, 2025

A flaw was found in Samba, in the front-end WINS hook handling: NetBIOS names from registration packets are passed to a shell without proper validation or escaping. Unsanitized NetBIOS name data from WINS registration packets are inserted into a shell command and executed by the Samba Active Directory Domain Controllers wins hook, allowing an unauthenticated network attacker to achieve remote command execution as the Samba process.

Shell injection

QEMU e1000 Driver Buffer Overflow Enables Host DoS
CVE-2025-12464 6.2 - Medium - October 31, 2025

A stack-based buffer overflow was found in the QEMU e1000 network device. The code for padding short frames was dropped from individual network devices and moved to the net core code. The issue stems from the device's receive code still being able to process a short frame in loopback mode. This could lead to a buffer overrun in the e1000_receive_iov() function via the loopback code path. A malicious guest user could use this vulnerability to crash the QEMU process on the host, resulting in a denial of service.

Stack Overflow

Data Corruption via luksmeta on LUKS1 Disks
CVE-2025-11568 4.4 - Medium - October 15, 2025

A data corruption vulnerability has been identified in the luksmeta utility when used with the LUKS1 disk encryption format. An attacker with the necessary permissions can exploit this flaw by writing a large amount of metadata to an encrypted device. The utility fails to correctly validate the available space, causing the metadata to overwrite and corrupt the user's encrypted data. This action leads to a permanent loss of the stored information. Devices using the LUKS formats other than LUKS1 are not affected by this issue.

Improper Validation of Specified Quantity in Input

Samba vfs_streams_xattr Heap LE Leading to ID Disclosure
CVE-2025-9640 4.3 - Medium - October 15, 2025

A flaw was found in Samba, in the vfs_streams_xattr module, where uninitialized heap memory could be written into alternate data streams. This allows an authenticated user to read residual memory content that may include sensitive data, resulting in an information disclosure vulnerability.

Use of Uninitialized Resource

libxslt exsltFuncResultComp type confusion may lead to crash
CVE-2025-11731 3.1 - Low - October 14, 2025

A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT <func:result> elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads and potential crashes. While difficult to exploit, the flaw could lead to application instability or denial of service.

Object Type Confusion

SSSD AD Kerberos Auth Plugin Flaw Enables Privilege Escalation
CVE-2025-11561 8.8 - High - October 09, 2025

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

Improper Privilege Management

QEMU QIOChannelWebsock UAF via WebSocket handshake
CVE-2025-11234 7.5 - High - October 03, 2025

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.

Dangling pointer

libxslt UAF Vulnerability in XSL Node Parsing
CVE-2025-10911 5.5 - Medium - September 25, 2025

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.

Dangling pointer

Podman Build Context Leakage via RUN --mount=type=bind
CVE-2025-4953 7.4 - High - September 16, 2025

A flaw was found in Podman. In a Containerfile or Podman, data written to RUN --mount=type=bind mounts during the podman build is not discarded. This issue can lead to files created within the container appearing in the temporary build context directory on the host, leaving the created files accessible.

Creation of Temporary File With Insecure Permissions

libssh KEX Memory Leak Triggered by Repeated Incorrect Key Exchange Guesses
CVE-2025-8277 3.1 - Low - September 09, 2025

A flaw was found in libssh's handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability.

Memory Leak

Podman v4.0.0–v5.6.1: kube Play Overwrite Host Files via Symlink Volumes
CVE-2025-9566 8.1 - High - September 05, 2025

There's a vulnerability in podman where an attacker may use the kube play command to overwrite host files when the kube file container a Secrete or a ConfigMap volume mount and such volume contains a symbolic link to a host file path. In a successful attack, the attacker can only control the target file to be overwritten but not the content to be written into the file. Binary-Affected: podman Upstream-version-introduced: v4.0.0 Upstream-version-fixed: v5.6.1

Directory traversal

CRI-O DoS: large /etc/passwd memory consumption via runAsUser
CVE-2025-4437 5.7 - Medium - August 20, 2025

There's a vulnerability in the CRI-O application where when container is launched with securityContext.runAsUser specifying a non-existent user, CRI-O attempts to create the user, reading the container's entire /etc/passwd file into memory. If this file is excessively large, it can cause the a high memory consumption leading applications to be killed due to out-of-memory. As a result a denial-of-service can be achieved, possibly disrupting other pods and services running in the same host.

Allocation of Resources Without Limits or Throttling

libssh int overflow in bin_to_base64() leads to heap corruption
CVE-2025-4877 4.5 - Medium - August 20, 2025

There's a vulnerability in the libssh package where when a libssh consumer passes in an unexpectedly large input buffer to ssh_get_fingerprint_hash() function. In such cases the bin_to_base64() function can experience an integer overflow leading to a memory under allocation, when that happens it's possible that the program perform out of bounds write leading to a heap corruption. This issue affects only 32-bits builds of libssh.

Memory Corruption

Operator SDK <0.15.2 RCE via insecure user_setup /etc/passwd
CVE-2025-7195 5.2 - Medium - August 07, 2025

Early versions of Operator-SDK provided an insecure method to allow operator containers to run in environments that used a random UID. Operator-SDK before 0.15.2 provided a script, user_setup, which modifies the permissions of the /etc/passwd file to 664 during build time. Developers who used Operator-SDK before 0.15.2 to scaffold their operator may still be impacted by this if the insecure user_setup script is still being used to build new container images. In affected images, the /etc/passwd file is created during build time with group-writable permissions and a group ownership of root (gid=0). An attacker who can execute commands within an affected container, even as a non-root user, may be able to leverage their membership in the root group to modify the /etc/passwd file. This could allow the attacker to add a new user with any arbitrary UID, including UID 0, leading to full root privileges within the container.

Incorrect Default Permissions

CIRCL FourQ RCE via Low-Order Point Injection in Diffie-Hellman
CVE-2025-8556 3.7 - Low - August 06, 2025

A flaw was found in CIRCL's implementation of the FourQ elliptic curve. This vulnerability allows an attacker to compromise session security via low-order point injection and incorrect point validation during Diffie-Hellman key exchange.

Improper Validation of Specified Type of Input

netavark DNS Rebinding in Podman Containers
CVE-2025-8283 3.7 - Low - July 28, 2025

A vulnerability was found in the netavark package, a network stack for containers used with Podman. Due to dns.podman search domain being removed, netavark may return external servers if a valid A/AAAA record is sent as a response. When creating a container with a given name, this name will be used as the hostname for the container itself, as the podman's search domain is not added anymore the container is using the host's resolv.conf, and the DNS resolver will try to look into the search domains contained on it. If one of the domains contain a name with the same hostname as the running container, the connection will forward to unexpected external servers.

External Control of System or Configuration Setting

libssh SFTP Packet Size Integer Overflow DoS
CVE-2025-5449 6.5 - Medium - July 25, 2025

A flaw was found in the SFTP server message decoding logic of libssh. The issue occurs due to an incorrect packet length check that allows an integer overflow when handling large payload sizes on 32-bit systems. This issue leads to failed memory allocation and causes the server process to crash, resulting in a denial of service.

Integer Overflow or Wraparound

NULL Pointer Deref in libssh Session ID Calculation Crash
CVE-2025-8114 4.7 - Medium - July 24, 2025

A flaw was found in libssh, a library that implements the SSH protocol. When calculating the session ID during the key exchange (KEX) process, an allocation failure in cryptographic functions may lead to a NULL pointer dereference. This issue can cause the client or server to crash.

NULL Pointer Dereference

libssh PrivateKey uninit var leads to Heap Corruption
CVE-2025-4878 3.6 - Low - July 22, 2025

A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.

Dangling pointer

Polkit XML OOB Write via >32 Deep Policy Elements
CVE-2025-7519 6.7 - Medium - July 14, 2025

A flaw was found in polkit. When processing an XML policy with 32 or more nested elements in depth, an out-of-bounds write can be triggered. This issue can lead to a crash or other unexpected behavior, and arbitrary code execution is not discarded. To exploit this flaw, a high-privilege account is needed as it's required to place the malicious policy file properly.

Memory Corruption

GnuTLS NULL Deref in figure_common_ciphersuite()
CVE-2025-6395 6.5 - Medium - July 10, 2025

A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().

NULL Pointer Dereference

libxslt Heap Corruption via atype Flag Manipulation
CVE-2025-7425 7.8 - High - July 10, 2025

A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.

Dangling pointer

Type Confusion via Shared psvi Field in libxslt XML Transform
CVE-2025-7424 7.5 - High - July 10, 2025

A flaw was found in the libxslt library. The same memory field, psvi, is used for both stylesheet and input data, which can lead to type confusion during XML transformations. This vulnerability allows an attacker to crash the application or corrupt memory. In some cases, it may lead to denial of service or unexpected behavior.

Object Type Confusion

GnuTLS certtool Heap OOB Null Write in Template Parsing – DoS
CVE-2025-32990 6.5 - Medium - July 10, 2025

A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

Heap-based Buffer Overflow

GnuTLS CT SCT Heap-Buffer-Overread (CVE-2025-32989)
CVE-2025-32989 5.3 - Medium - July 10, 2025

A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.

Improper Certificate Validation

GnuTLS Double-Free in SAN Export Logic (CVE-2025-32988)
CVE-2025-32988 6.5 - Medium - July 10, 2025

A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.

Double-free