Red Hat Openshift

RCE through Unverified Script Download in OpenShift Ansible Installer
CVE-2026-92092 7.4 - High - October 29, 2026

A flaw was found in openshift-ansible. The installer container's `run` script downloads and executes remote inventory and dynamic scripts without integrity verification. A remote attacker, by performing a Man-in-the-Middle (MITM) attack or compromising the HTTP server providing these scripts, could substitute an arbitrary executable. This malicious executable would then run with the installer's user ID (UID) and full cluster-provisioning privileges, leading to arbitrary code execution.

Download of Code Without Integrity Check

dnsmasq DHCPv6 Hostname OOB Read on Local Network
CVE-2026-93009 4.3 - Medium - October 29, 2026

A flaw was found in dnsmasq. The DHCPv6 client hostname parser can read one byte past the end of a crafted FQDN option because it checks the next label length before confirming the pointer is still inside the option. An attacker on the local network can trigger this with a single DHCPv6 packet. The extra byte is not returned to the client or logged, and no crash has been demonstrated.

Out-of-bounds Read

dnsmasq DHCP Leasequery Allows Local Network to Leak Lease Data
CVE-2026-93010 4.3 - Medium - October 29, 2026

A flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.

AuthZ

dnsmasq TFTP cache reuse allows malicious PXE boot
CVE-2026-93006 6.8 - Medium - October 29, 2026

A flaw was found in dnsmasq. The TFTP server can serve the wrong file contents because a recently used transfer cache is not invalidated when a transfer finishes. An attacker on the local network who can request a TFTP file may cause a later client to receive previously cached data instead of the requested file. In PXE network-boot environments this can substitute attacker-chosen boot content for a victim machine.

Operation on a Resource after Expiration or Release

DNSMASQ TCP Connection Flood causing DNS Service Denial
CVE-2026-93007 5.3 - Medium - October 29, 2026

A flaw was found in dnsmasq. The TCP DNS service uses a small fixed pool of child processes and does not set a receive timeout on client connections. A remote attacker can open idle TCP connections to port 53 and occupy the entire pool, preventing new TCP DNS connections and DNSSEC validation that requires TCP fallback. UDP DNS resolution continues, and occupied slots are released after a fixed lifetime.

Resource Exhaustion

dnsmasq DNSSEC buffer overrun, allows heap metadata overwrite
CVE-2026-93011 5.3 - Medium - October 29, 2026

A flaw was found in dnsmasq. After a reduction of internal domain-name buffer sizes, the DNSSEC validator can write a few bytes past a name buffer when converting names to and from DNS wire format. An attacker who can cause the server to validate a crafted DNSSEC response may overwrite a small amount of adjacent heap metadata. DNSSEC support is not compiled in by default and must also be enabled at runtime.

Memory Corruption

dnsmasq CNAME Cache Pollution via Unverified DNS Response
CVE-2026-93008 6.8 - Medium - October 29, 2026

A flaw was found in dnsmasq. When following a CNAME in a DNS response, the resolver can cache records for the CNAME target without checking that those records belong to the responding server's authorized zone. In split-DNS deployments that send some domains to a specific upstream, an attacker who controls that upstream can inject cache entries for unrelated names. Later clients may then receive attacker-chosen addresses for those names.

Insufficient Verification of Data Authenticity

Polkit Int Underflow in Auth Agent Causing DoS
CVE-2026-85498 3.5 - Low - October 29, 2026

A flaw was found in polkit. When processing input that begins with a null byte, an arithmetic error in the authentication agent helper causes an integer underflow during buffer length calculation, resulting in an out-of-bounds memory read. An attacker capable of supplying crafted input can trigger this flaw, potentially causing an application crash and resulting in a Denial of Service (DoS).

Out-of-bounds Read

Red Hat libmodulemd OOB Read in YAML Serialization (CVE-2026-92824)
CVE-2026-92824 6.2 - Medium - October 21, 2026

A flaw was found in libmodulemd. In the module stream v2 rpm-map emission path, an inner loop incorrectly uses the count of digest algorithms as its bound instead of the number of checksums in the current digest table. Crafted modulemd v2 metadata with multiple digest types can trigger an out-of-bounds read during YAML serialization, typically causing a crash and resulting in a denial of service.

Out-of-bounds Read

libmodulemd DOS via unlimited nested YAML xmd recursion
CVE-2026-92822 6.2 - Medium - October 21, 2026

A flaw was found in libmodulemd. When parsing module metadata, the xmd field is converted into nested GVariant values through recursive YAML mapping and sequence helpers without a recursion-depth or node-count limit. An attacker who can supply crafted modulemd YAML with deeply nested xmd content can cause stack exhaustion or excessive resource consumption, resulting in a denial of service.

Stack Exhaustion

Red Hat libmodulemd DoS via Unbounded Decompression Size
CVE-2026-92823 6.2 - Medium - October 21, 2026

A flaw was found in libmodulemd. In builds with rpmio support enabled, compressed modulemd YAML is decompressed through a custom read handler that does not enforce a cumulative decompressed-size limit before parsing. An attacker who can supply a highly compressible compressed YAML file can cause excessive CPU and memory consumption, resulting in a denial of service.

Data Amplification

bootc/ostree: Bypass Image Signature Validation on Reboot
CVE-2026-16460 7.4 - High - October 19, 2026

A flaw was found in bootc and ostree. Already-staged deployments are finalized without revalidating the deployment's container image against the current containers signature policy. Unsigned OS content staged under a prior permissive policy can remain bootable after policy is hardened to reject unsigned images, leading to full host compromise on reboot.

Insufficient Verification of Data Authenticity

Bootc SigPolicy Flaw Enables Unsigned Image Exec as Root
CVE-2026-16487 - October 19, 2026

nfs-utils rpc.statd DoS via Memory Leak
CVE-2026-89096 5.9 - Medium - October 16, 2026

A flaw was found in nfs-utils. An unauthenticated remote attacker can trigger a Denial of Service (DoS) by sending repeated state notification requests to an exposed rpc.statd service. The service fails to properly release memory allocated during callback processing, leading to continuous memory growth. Sustained requests can exhaust system resources, eventually causing the service to degrade or crash.

Missing Release of Resource after Effective Lifetime

libtirpc Denial of Service via Unbounded PMAPPROC_DUMP Decoding
CVE-2026-85977 5.3 - Medium - October 16, 2026

A flaw was found in libtirpc. A remote attacker can exploit this vulnerability by sending specially crafted PMAPPROC_DUMP replies to a client application that uses the pmap_getmaps() function against an attacker-controlled host. This unbounded decoding can lead to excessive memory and CPU allocation, causing the client process to experience a Denial of Service (DoS) due to resource exhaustion.

Excessive Platform Resource Consumption within a Loop

libtirpc DoS via Unbounded Memory Allocation by Oversized RPCSEC_GSS Data
CVE-2026-85231 6.5 - Medium - October 16, 2026

A flaw was found in libtirpc. An authenticated remote attacker could exploit this vulnerability by sending oversized wrapped data requests to an RPC (Remote Procedure Call) service configured with RPCSEC_GSS (Remote Procedure Call Security-Generic Security Service) integrity or privacy. This can lead to unbounded memory allocation, resulting in a Denial of Service (DoS) by exhausting system resources and causing the service to become unstable or terminate.

Allocation of Resources Without Limits or Throttling

Local DoS via fsidd assertion failure in nfs-utils
CVE-2026-89098 5.5 - Medium - October 16, 2026

A flaw was found in nfs-utils. The fsidd daemon improperly handles input received over its local domain socket by relying on program assertions to verify command arguments. A local user can exploit this vulnerability by sending a malformed request lacking the required arguments to trigger an assertion failure. This causes the daemon to crash, resulting in a Denial of Service (DoS) for filesystem identifier lookup services until restarted.

assertion failure

Ansible Operator Plugins: Jinja2 Template Injection Enables ClusterWide PrivEsc
CVE-2026-92982 8.5 - High - October 15, 2026

A flaw was found in Ansible Operator Plugins. A low-privileged Kubernetes user can exploit a Jinja2 template injection vulnerability by crafting malicious custom resource (CR) specification values. These values are processed by Ansible without proper sanitization, allowing embedded Jinja2 expressions to be executed within the operator pod. This can lead to arbitrary code execution and privilege escalation, granting the attacker control over the operator's service account with cluster-wide permissions.

1336

DPDK vhost-crypto Integer Overflow, Host Buffer Overrun
CVE-2026-86849 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost vhost-crypto. Integer overflow in chain length checks, and missing length checks on the RSA path, can overflow a host buffer in the vhost-crypto backend.

Memory Corruption

DPDK nfp vDPA Driver Buffer Overflow via Excess Virtqueues
CVE-2026-86856 6.5 - Medium - October 14, 2026

A flaw was found in the DPDK nfp vDPA driver. Stack and heap buffers sized for a single queue pair can be overflowed when more virtqueues are configured, leading to a host crash or memory corruption.

Memory Corruption

DPDK vhost-crypto Uninitialized Next Pointer Crash in Write-Back Chain
CVE-2026-86847 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost vhost-crypto. Write-back chain cleanup can follow an uninitialized next pointer when mapping a guest descriptor fails, causing the host vhost-crypto process to hang or crash.

Access of Uninitialized Pointer

DPDK vhost-crypto OOB Write via Unchecked Avail-Ring Index
CVE-2026-86846 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost vhost-crypto. A guest can supply an avail-ring descriptor index that is used without bounds checking, causing an out-of-bounds write in the host vhost-crypto backend.

Memory Corruption

DPDK vhost-crypto Use-after-Free via stale session pointer
CVE-2026-86845 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost vhost-crypto. Session cleanup can leave a stale cached session pointer, and the data path does not check the session type before attaching it, leading to use-after-free or type confusion in the host vhost-crypto backend.

Dangling pointer

DPDK lib/vhost RX Descriptor Underflow Causes VDS in OVSDPDK
CVE-2026-86566 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.

Integer underflow

DPDK lib/vhost vhost-crypto Indirect-Descriptor OOB via double-fetch
CVE-2026-86848 8.8 - High - October 14, 2026

A flaw was found in DPDK lib/vhost vhost-crypto. The indirect-descriptor snapshot double-fetches a guest descriptor next index, allowing a malicious guest to cause an out-of-bounds access in the host backend.

TOCTTOU

DPDK lib/vhost UAF via IOTLB miss leading to use-after-unmap
CVE-2026-86567 8.8 - High - October 14, 2026

A flaw was found in DPDK lib/vhost. The VDUSE handler fails to invalidate vring pointers when the IOTLB is invalidated, leading to use-after-unmap.

Dangling pointer

DPDK lib/vhost OOB write via virtqueue size desync
CVE-2026-86565 8.2 - High - October 14, 2026

A flaw was found in DPDK lib/vhost. A guest can desynchronize virtqueue size from inflight descriptor table size, causing an out-of-bounds write in the host vhost process.

Memory Corruption

DPDK vhost double-offset bug causes memory access error
CVE-2026-86563 7.8 - High - October 14, 2026

A flaw was found in DPDK lib/vhost. A double-offset bug in vhost log mapping calculation can lead to incorrect memory access.

Incorrect Calculation of Buffer Size

DPDK VHOST TOCTOU Double-Fetch Heap Overflow Vulnerability
CVE-2026-86562 7.8 - High - October 14, 2026

A flaw was found in DPDK lib/vhost. A TOCTOU double-fetch of control-queue descriptors allows a heap buffer overflow with attacker-controlled content in the VDUSE control-queue handler.

Race Condition

DPDK vhost mmap size validation flaw leads to host crash
CVE-2026-86561 6.5 - Medium - October 14, 2026

A flaw was found in DPDK lib/vhost. Memory size is not adequately validated before mmap during vhost memory-region setup, which can lead to a host crash or memory corruption.

Allocation of Resources Without Limits or Throttling

DPDK vhost OOB heap copy via indirect descriptor table
CVE-2026-93683 6.4 - Medium - October 14, 2026

A flaw was found in the DPDK vhost library. When handling a virtio indirect descriptor table, the host reads the table length more than once from guest memory and can allocate a host copy before validating that length. A guest that changes the length between those reads, or that supplies an out-of-range next index on a small host copy in the vDPA relay path, can cause the host vhost process to walk past the validated mapping or heap copy. That can crash or disrupt the vhost process. Out-of-bounds bytes are consumed as descriptor fields for GPA translation and are not returned to the guest as payload. This is a residual issue in the non-contiguous indirect descriptor copy path introduced as part of the CVE-2018-1059 fix.

TOCTTOU

OpenShift Console SSRF via Helm Chart URL (CVE-2026-75888)
CVE-2026-75888 7.7 - High - October 12, 2026

A flaw was found in the OpenShift console. An authenticated console user can exploit a Server-Side Request Forgery (SSRF) vulnerability by providing a specially crafted Helm chart URL without proper validation. This allows the user to make the console pod fetch arbitrary URLs, potentially leading to the disclosure of sensitive information through error messages or enabling blind port scanning within the cluster.

SSRF

Ansible Core Tarball Path Traversal via Symlink Chain Exploit
CVE-2026-89091 8.8 - High - October 08, 2026

A flaw was found in ansible-core. When installing a collection with `ansible-galaxy collection install`, the archive extractor validates member paths using lexical path normalisation (os.path.abspath) instead of resolving symbolic links (os.path.realpath), and it performs no containment check on symlink-typed directory members before creating them. A crafted collection tarball can chain symlink directory entries so that a subsequent file member is written outside the intended destination directory. This allows an attacker who can get a victim to install a malicious collection to overwrite arbitrary files with the privileges of the user running ansible-galaxy, leading to code execution on the control node. This is a bypass of the fix for CVE-2020-10691.

insecure temporary file

OpenShift Insights Operator: Misconfigured ClusterRole Grants All Secrets
CVE-2026-93017 7.7 - High - October 08, 2026

The `insights-operator-gather` ClusterRole grants the operator's service account read access to secrets in the core API group with no namespace or resourceNames restriction therefore, access to every secret in every namespace in the cluster. Ref: https://github.com/openshift/insights-operator/blob/8f15e3157ff09f54ab22801f5b21da35a195cc6d/manifests/03-clusterrole.yaml#L368-L373 ``` - apiGroups: - "" resources: - secrets verbs: - get - list ``` By spawning a pod with the gather service account mounted, an attacker will be able to access any secret in any namespace. ``` spec: serviceAccountName:"gather" ```

Improper Privilege Management

Red Hat sssd-kcm Local DoS via Large Request Header
CVE-2026-80048 5.5 - Medium - October 06, 2026

A flaw was found in `sssd-kcm`. A local user or process able to connect to the `sssd-kcm` UNIX socket can exploit this vulnerability. By sending a large request length header and then stalling the connection, an attacker can cause the system to preallocate significant memory. This leads to memory exhaustion within the `sssd-kcm` responder, resulting in a Denial of Service (DoS) for affected deployments.

Allocation of Resources Without Limits or Throttling

CRI-O bind_mount_prefix Symlink Spoof leads to Host Path Escalation
CVE-2026-76061 5.5 - Medium - October 06, 2026

A flaw was found in CRI-O's `bind_mount_prefix` handling. When configured with a non-empty `bind_mount_prefix`, a malicious container or local attacker could use a Container Runtime Interface (CRI) hostPath containing an intermediate absolute symlink. This could cause the bind mount source to resolve outside the intended prefixed root, potentially leading to unauthorized access to files or privilege escalation on the host system.

insecure temporary file

SSSD Local DoS via Responder Service File Descriptor Exhaustion
CVE-2026-88252 4.7 - Medium - October 06, 2026

A flaw was found in sssd. A local user can cause a Denial of Service (DoS) by exhausting the responder service's available file descriptors (system handles used for open connections). By opening and maintaining many concurrent connections to a responder socket while continuing to queue new connection attempts, an attacker can trigger an unthrottled retry loop. This condition leads to high CPU utilization and stalls the service, preventing legitimate identity and authentication requests from being processed.

Infinite Loop

SSSD LDAP Expired-Password Bypass via Early Rule Termination
CVE-2026-92821 6.8 - Medium - October 06, 2026

A flaw was found in SSSD. When configured to evaluate password expiration warnings before restrictive access rules in LDAP (Lightweight Directory Access Protocol) environments, an expired-password warning terminates rule evaluation early and treats the access request as successful. A remote authenticated user with an expired password using an alternative authentication method, such as SSH public key authentication, can exploit this flaw to bypass access control restrictions and gain unauthorized access to protected systems.

Return of Wrong Status Code

RCE: oc-mirror Local Cache Registry Exposes All Interfaces
CVE-2026-96577 7.1 - High - October 01, 2026

A flaw was found in oc-mirror. During mirroring operations, the embedded local cache registry binds to all network interfaces without authentication or encryption instead of restricting access to the local system. An unauthenticated attacker on an adjacent network can connect to the exposed service to push tampered container images, delete cached images, or access mirrored content.

Missing Authentication for Critical Function

Red Hat oauth-proxy Open Redirect via rd Parameter
CVE-2026-83589 6.1 - Medium - October 01, 2026

A flaw was found in oauth-proxy. The application fails to properly validate the destination redirect parameter (`rd`) during post-login redirection. A remote attacker can exploit this vulnerability by enticing a user to follow a specially crafted link, resulting in the user being redirected to an arbitrary external website after authenticating. This open redirect can be leveraged to conduct phishing attacks or credential theft.

Open Redirect

CRI-O Container Runtime Sandbox Persistence Exploit Enables Host Escape
CVE-2026-62146 7.8 - High - September 30, 2026

A trust-boundary flaw in CRI-O's sandbox state persistence allows attacker-influenced pod metadata to overwrite CRI-O's own reserved sandbox bookkeeping; once reloaded as trusted after a restart, a later container recreate in that sandbox can expose a host-side runtime-management resource inside the container, enabling container escape.

Trust Boundary Violation

Red Hat kube-compare Container Ref Path RCE on Operator Workstation
CVE-2026-87114 7.1 - High - September 28, 2026

A flaw was found in kube-compare. When processing a 'container://' reference path, the tool incorrectly executes an untrusted container image's entrypoint instead of merely extracting data from a stopped container. This allows a remote attacker to achieve arbitrary code execution on the operator's workstation. If the Docker daemon requires elevated privileges, the untrusted code may execute with root-mediated daemon privileges, posing a significant security risk.

Inclusion of Functionality from Untrusted Control Sphere

Use-after-Free in QEMU 9pfs Enables VM Escape
CVE-2026-93834 8.8 - High - September 25, 2026

A use-after-free vulnerability was found in QEMU's 9pfs subsystem. A race condition between the main thread and a worker thread when processing concurrent Tlcreate and Twalk requests allows a malicious guest user to craft a fid path containing stale heap data, bypassing directory traversal restrictions and escaping the shared directory boundary. This can lead to arbitrary host file read/write and code execution (VM escape) as the QEMU process user.

Dangling pointer

OpenShift Console Path Traversal via lng/ns on /locales/resource.json
CVE-2026-75887 7.5 - High - September 23, 2026

A flaw was found in the OpenShift console. An unauthenticated attacker can exploit a path traversal vulnerability by manipulating the `lng` and `ns` query parameters in the `/locales/resource.json` endpoint. This allows the attacker to read sensitive `*.json` files from the pod filesystem, including plugin manifests and configuration files. Furthermore, this flaw can enable path traversal against registered dynamic-plugin backends.

Directory traversal

OpenShift Console CatalogdHandler Auth Bypass & Cookie Forwarding
CVE-2026-75886 7.2 - High - September 23, 2026

A flaw was found in openshift/console. An unauthenticated remote attacker can exploit a misconfiguration in the CatalogdHandler, which lacks proper authentication, and the forwarding of the `openshift-session-token` cookie. This allows the attacker to send requests to the in-cluster catalogd service, leading to the disclosure of the internal operator-catalog index and providing a relay into the openshift-catalogd namespace.

Confused Deputy

SSSD LDAP ppolicy failopen: Deleted user retains access
CVE-2026-90462 5.4 - Medium - September 22, 2026

A flaw was found in SSSD. When configured with the LDAP access provider and `ldap_access_order` including `ppolicy` or `lockout`, a fail-open condition in the LDAP ppolicy access check can occur if a user lookup returns zero results. This can incorrectly return success and cache an allow decision, permitting continued authorization for a deleted or deprovisioned user. A remote attacker with prior valid account context could exploit this to maintain access to information and potentially make limited modifications to resources that should no longer be available.

Improper Handling of Insufficient Permissions or Privileges

rpcbind DoS via unbounded memory growth
CVE-2026-94640 7.5 - High - September 22, 2026

A flaw was found in rpcbind. This vulnerability allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by sending a large number of unique requests. The rpcbind service records previously unseen RPC (Remote Procedure Call) statistics in unbounded in-memory lists, leading to persistent memory growth and increased CPU usage. This can degrade or exhaust service availability.

Resource Exhaustion

Integer Overflow in libstdc++ New Operator Causing Memory Corruption
CVE-2026-95619 7.7 - High - September 22, 2026

A flaw was found in libstdc++. An integer overflow can occur when processing large inputs to the aligned operator new in the C++ library. This vulnerability could lead to an undersized memory allocation, potentially causing memory corruption or application instability.

Integer Overflow or Wraparound

Heap Overflow in libslirp DHCPv6/TFTP Builders Arbitrary Code Exec
CVE-2026-95508 7.4 - High - September 22, 2026

A heap-based buffer overflow was found in the DHCPv6 and TFTP response builders of libslirp. When the host is configured with a small interface MTU, a guest-supplied DHCPv6 CLIENTID option or TFTP blksize option can overflow the reply buffer with attacker-controlled content and length, resulting in denial of service and potentially arbitrary code execution in the host process. The default interface MTU is not affected.

Memory Corruption

OpenShift oc-mirror PGP Signature Bypass via Intercepted Signature Endpoint
CVE-2026-75939 7.4 - High - September 21, 2026

A flaw was found in openshift/oc-mirror. The tool incorrectly verifies PGP (Pretty Good Privacy) release image signatures by checking for signature errors before the entire signed body is processed, leading to a bypass of the signature verification. A remote attacker, by intercepting or manipulating network traffic to the signature endpoint, could exploit this to craft a PGP message with a valid Red Hat release key ID but a forged signature. This enables the `oc-mirror` tool to accept and mirror a malicious release payload into a disconnected registry, potentially compromising the integrity of software deployments.

Improper Verification of Cryptographic Signature