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CVE-2026-86566

Dpdk: dpdk: guest with runt rx descriptors underflows copy length in vhost enqueue (split and packed rings)

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 3 more
CVE-2026-86561

Dpdk: dpdk: missing memory size validation before mmap in vhost memory region setup

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-86567

Dpdk: dpdk: vduse handler fails to invalidate vring pointers when iotlb is invalidated, leading to use-after-unmap

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.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-86565

Dpdk: dpdk: guest can desynchronize virtqueue size from inflight descriptor table size, causing out-of-bounds write

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.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Dpdk Red Hat Redhat
Products
Dpdk Enterprise Linux Enterprise Linux and 5 more
CVE-2026-74860

Libxml2: double-free/uaf in libxml2 python bindings

A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.

CVSS 3.1 · 8.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Cert Manager Cost Management On Premise Enterprise Linux and 13 more
CVE-2026-87853

Sssd: sssd: idp authentication prefix comparison allows cross-user impersonation

A flaw was found in SSSD's IdP authentication provider. The eval_access_token_buf() function compares the OIDC subject identifier using strncmp() with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix of a target user's identifier can authenticate as the target user.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Redhat Sssd
Products
Enterprise Linux Openshift Openshift Container Platform and 2 more
CVE-2026-42013

Gnutls: gnutls: certificate validation bypass due to oversized subject alternative name

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.

CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Gnu Redhat
Products
Gnutls Cert Manager Discovery and 14 more
CVE-2026-42011

Gnutls: gnutls: security bypass due to incorrect name constraint handling

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Cert Manager Discovery Enterprise Linux and 13 more
CVE-2026-16313

Sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --export

A flaw was found in sg3_utils. The sg_inq command, when invoked with the --export option, outputs device identification data without sanitizing control characters in SCSI name string fields. A newline character embedded in a device-supplied name string can inject arbitrary properties into the udev device database. This could allow an attacker who can present a crafted SCSI device to execute arbitrary commands as root when the device is disconnected.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Enterprise Linux Eus Openshift and 7 more
CVE-2026-19685

Networkmanager: networkmanager: 802-1x ca-path and phase2-ca-path bypass private_user restriction, allowing wpa-enterprise server validation bypass (incomplete fix for cve-2025-9615)

NetworkManager did not apply the private_user restriction to the 802-1x.ca-path and phase2-ca-path directory-valued connection properties. This incomplete fix for CVE-2025-9615 allows an unprivileged local user to point a private WPA-Enterprise (802.1X) connection profile's CA path at an attacker-controlled directory, bypassing server certificate validation and enabling credential theft via a rogue access point.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Enterprise Linux Hardened Images Hummingbird and 4 more
CVE-2026-15028

Libarchive: heap overflow oob read while parsing a tar archive contains a pax extended header

A flaw was found in libarchive. This vulnerability allows a remote attacker to trigger a heap overflow by providing a specially crafted tar archive. The issue occurs during the parsing of a PAX extended header containing a malformed SUN.holesdata sparse-file attribute. Successful exploitation could lead to a denial of service, making the system unavailable, or potentially allow for arbitrary code execution, giving the attacker control over the affected system.

CVSS 3.1 · 3.9 Low EPSS < 1% KEV · Not listed
Vendors
Libarchive Red Hat Redhat
Products
Libarchive Enterprise Linux Cost Management On Premise and 7 more
CVE-2026-15811

Kronosnet: kronosnet: encryption key exposure in memory after cryptographic configuration changes

A vulnerability was found in kronosnet's (version <=1.34) cryptographic configuration management. The framework does not correctly zero-out or wipe sensitive memory segments after executing changes to its cryptographic configuration. This omission leaves raw encryption keys resident in memory after the associated structures are freed. A local attacker capable of leveraging memory disclosure techniques could exploit this flaw to retrieve the active encryption key, allowing them to decrypt cluster network communications or inject malicious packets to cause severe high-availability cluster instability.

CVSS 3.1 · 5.8 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 1 more
CVE-2026-16461

Rpcbind: rpcbind: stack buffer overflow in rpcinfo rpcbdump() short-mode version-list formatting

A stack-based buffer overflow was found in rpcbind's rpcinfo utility. In rpcbdump() short mode (used by `rpcinfo -s`), version numbers from a remote RPCBPROC_DUMP reply are written into a fixed-size stack buffer without bounds checking. A user or administrator who runs `rpcinfo -s` against a malicious or compromised rpcbind endpoint could experience a crash or denial of service of the rpcinfo client.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Enterprise Linux Openshift and 1 more
CVE-2026-17113

Cri-o: cri-o: unvalidated image env var causes daemon crash

A flaw was found in CRI-O's container-creation environment-variable handling (`mergeEnvs` in `server/utils.go`, consumed by `setupContainerEnvironmentAndWorkdir` in `server/container_create.go`). When a `CreateContainer` request supplies a `nil` CRI `Envs` field, CRI-O falls back to using the target OCI image's `config.Env` entries unfiltered, in contrast to the normal merge path, which validates each entry for a `key=value` form before use. An OCI image whose `config.Env` contains an entry with no `=` character (e.g. a bare `NOEQUALS` string) causes CRI-O to split that entry into a single-element slice and then index its second element, which is out of range. This triggers an unrecovered Go runtime panic in the `crio` daemon process, crashing it and terminating the container-runtime service for all workloads on the node until it is restarted.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Cri-o Redhat
Products
Cri-o Openshift Openshift Container Platform
CVE-2026-90994

Sssd: sssd: denial of service via malformed pam v1 requests

A flaw was found in sssd, specifically within the PAM (Pluggable Authentication Modules) responder's protocol v1 parser, pam_parse_in_data(). A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This can trigger an out-of-bounds read, potentially causing the PAM responder to terminate or restart, leading to a local denial of service.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat Sssd
Products
Enterprise Linux Enterprise Linux Openshift and 3 more
CVE-2026-90995

Sssd: sssd: local denial of service due to null pointer dereference in pam responder

A flaw was found in SSSD (System Security Services Daemon). A local attacker with privileges to connect to the PAM (Pluggable Authentication Modules) responder socket can send a specially crafted protocol request. If the `pam_app_services` configuration is enabled and the service item is omitted from the request, a NULL pointer dereference can occur. This vulnerability leads to a denial of service, causing the PAM responder to crash and disrupt authentication services.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Red Hat Redhat and 1 more
Products
Sssd Enterprise Linux Enterprise Linux and 4 more
CVE-2026-90996

Sssd: sssd: denial of service in nss responder via crafted zero-length requests

A flaw was found in sssd. A local unprivileged user could send a specially crafted request with a zero-length body to the Network Security Services (NSS) responder. This could lead to a denial-of-service condition, causing the NSS responder to become unstable or terminate. This vulnerability affects the availability of the system responder.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Red Hat Redhat and 1 more
Products
Sssd Enterprise Linux Enterprise Linux and 4 more
CVE-2026-79705

Podman: buildah: buildah/copier: directory escape via crafted tar symlinks when used outside buildah by non-root callers

A flaw was found in the buildah/copier Go package. When used outside of Buildah by a non-root caller, a crafted tar archive containing malicious symlinks can escape the target extraction directory and create files outside the intended destination. Buildah itself uses chroot hardening and is not affected.

CVSS 3.1 · 4.5 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Red Hat Quay 3 Ansible Automation Platform and 12 more
CVE-2026-79699

Podman: buildah: skopeo: containers/storage: malicious tar whiteout header allows replacement of extraction destination directory

A flaw was found in the containers/storage library. A crafted tar archive containing a malicious whiteout header (e.g. victim/.wh.) can cause the extraction destination directory to be replaced with an arbitrary file when processed by storage/pkg/archive.UnpackLayer, ApplyLayer, or ApplyUncompressedLayer.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
Vendors
Red Hat Redhat
Products
Enterprise Linux Red Hat Quay 3 Ansible Automation Platform and 12 more