CVE-2026-84042

Crun: crun: rootful krun with passt executes container payload as host root

A flaw was found in crun. When crun is built with libkrun and a container is started rootful with passt networking (krun.use_passt), crun can execute attacker-controlled payload from the container image with host root privileges. The issue is a regression in crun 1.29. It affects crun >= 1.29

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Containers Redhat

Products

Crun Enterprise Linux Hardened Images 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-2026-87766

Bubblewrap: bubblewrap: symlink traversal via /oldroot allows writing files outside sandbox during setup

A flaw was found in bubblewrap. During sandbox setup, creating files or directories under the new root can follow a parent symlink onto the host via /oldroot, writing attacker-chosen paths outside the sandbox as the launching user. This happens before the sandboxed process starts. This issue is GHSA-pxhw-h44j-8pfx. It is fixed in bubblewrap 0.12.0.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Hardened Images and 6 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-2026-124743

Busybox: divide-by-zero and heap over-read in the volume_id hfs+ prober

A flaw was found in BusyBox. When processing filesystem metadata, the volume identification component does not properly validate header values in HFS+ filesystems. An attacker able to attach a storage device or supply a specially crafted filesystem image can trigger an application crash, resulting in a Denial of Service (DoS) and preventing device resolution.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124742

Busybox: divide-by-zero in the volume_id fat prober via a zero sectors_per_cluster value

A flaw was found in BusyBox. The volume identification component fails to properly validate cluster parameters when analyzing specially formatted FAT filesystems. An attacker able to present a crafted storage device or disk image can trigger a divide-by-zero condition when partition scanning utilities inspect the volume. This issue causes the probing utilities to crash unexpectedly, resulting in a Denial of Service (DoS) that can disrupt device discovery and system boot operations.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124740

Busybox: use-after-free of requested_ipv6 in udhcpc6

A flaw was found in BusyBox's udhcpc6 DHCPv6 client. A malicious server on the local network can trigger a use-after-free condition by responding with a crafted Dynamic Host Configuration Protocol for IPv6 (DHCPv6) reply packet lacking usable address options. This issue causes the client to read stale heap memory, which can result in a Denial of Service (DoS) due to an application crash or disclose previously assigned network address data in subsequent discovery requests.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124738

Busybox: httpd password rule bypass for pre-compressed .gz files via accept-encoding: gzip

A flaw was found in BusyBox. When the HTTP daemon (httpd) has pre-compressed file support enabled, authentication checks are evaluated only against the requested URL path rather than the pre-compressed file being served. A remote attacker can exploit this flaw by requesting an uncompressed file path while specifying gzip encoding, bypassing password rules configured specifically for the compressed file. This vulnerability can lead to unauthorized information disclosure of sensitive files.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124741

Busybox: stack buffer overflow in udhcpc6 send_d6_renew() and send_d6_release()

A flaw was found in BusyBox. The udhcpc6 DHCPv6 client does not properly validate the size of network options sent by a server before copying them into memory. A malicious DHCPv6 server on the local network can exploit this flaw by sending a crafted reply, triggering a stack-based buffer overflow. This vulnerability could allow an attacker to achieve arbitrary code execution with root privileges or cause a denial of service (DoS) crash.

CVSS 3.1 · 7.6 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124739

Busybox: httpd stack buffer overflow via an "i:" rule in a subdirectory httpd.conf

A flaw was found in BusyBox. When the httpd web server processes subdirectory configuration files, an overly long index page name can trigger a stack-based buffer overflow. An attacker with permissions to write to a subdirectory configuration file could exploit this vulnerability to execute arbitrary code with elevated privileges or cause a denial of service (DoS) by crashing the server process.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-124737

Busybox: heap buffer overflow in the tftp client on fallback to the default block size

A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this issue by sending standard-sized network packets during a transfer, causing a heap buffer overflow. This flaw allows an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing the application.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Hummingbird Rhel Els

CVE-2026-121885

Podman: untrusted image labels allow auto-update to restart arbitrary systemd units

A flaw was found in Podman. An attacker can trigger a Denial of Service (DoS) by supplying a container image containing crafted metadata labels. Podman's auto-update mechanism improperly trusts these image labels to determine which system services to restart. If a user runs the malicious container and auto-update processes it, arbitrary system services are restarted with the user's privileges, potentially allowing an attacker to shut down the host system when Podman runs with administrative privileges.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hummingbird Openshift

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-2026-79705

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

CVE-2026-95520

Rpm: rpm: integer overflow in iterreadarchivenext() leads to heap-based buffer overflow when parsing untrusted rpm packages

A heap-based buffer overflow flaw was found in rpm. Parsing a symlink entry in an untrusted RPM package whose declared RPMTAG_LONGFILESIZES value is 0xFFFFFFFFFFFFFFFF causes an integer overflow in iterReadArchiveNext() that shrinks a buffer allocation to one byte, after which the payload's independently-controlled cpio filesize field is used to write attacker-controlled data past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Rpm

Products

Enterprise Linux Enterprise Linux Hardened Images and 4 more

CVE-2026-103242

Rpm: heap-based buffer overflow write in hex2binv() via a mistyped rpmtag_filesignatures header tag

A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat Rpm

Products

Enterprise Linux Enterprise Linux Hardened Images and 4 more

CVE-2026-4897

Polkit: polkit: denial of service via unbounded input processing through standard input

A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Freedesktop Redhat

Products

Polkit Enterprise Linux Hummingbird and 3 more

CVE-2026-111497

Out-of-Bounds Write in Google Brotli Decoder

A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.

CVSS 4.0 · 9.2 Critical EPSS 82.6% KEV · Listed

Vendors

7-zip Andybalholm Anthropic and 14 more

Products

P7zip Brotli Bun and 61 more