CVE-2026-91151

Cockpit: cockpit: local privilege escalation via insecure symlink handling in public key addition helper

A flaw was found in Cockpit. A local authenticated user with control over a target account's home directory can exploit a privileged symlink dereference vulnerability in the `ssh-add-public-key.sh` helper. When this helper runs with elevated privileges, it can be tricked into following attacker-controlled symlinks within the `.ssh` or `authorized_keys` paths. This allows the attacker to arbitrarily change file ownership and modes, potentially leading to local privilege escalation and impacting the integrity, confidentiality, and availability of the system.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Openshift Devspaces and 2 more

CVE-2026-91150

Cockpit: cockpit: denial of service via unbounded fragmented websocket messages

A flaw was found in Cockpit. This vulnerability allows a remote attacker, without prior authentication, to send specially crafted fragmented WebSocket messages. These messages accumulate without a total-size limit, leading to unbounded memory exhaustion and a denial of service in the `cockpit-ws` service.

CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Openshift Devspaces and 2 more

CVE-2026-84837

Rpm: command injection in `rpmbuild -t*` (`gettarspec`) via unescaped tarball path

A flaw was found in rpm. An attacker can exploit a command injection vulnerability by influencing the path or filename of a tarball processed by `rpmbuild -t*` to include shell metacharacters. This is particularly relevant in automated build or continuous integration (CI) workflows that ingest externally supplied artifact names. Successful exploitation allows for arbitrary command execution with the privileges of the build user, which could lead to information disclosure or disruption of the build environment.

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

Vendors

Redhat

Products

Enterprise Linux Hardened Images Hummingbird and 2 more

CVE-2026-78367

Rpm: rpmbuild gettarspec() crafted tar member name → macro injection

A vulnerability was found in RPM's rpmbuild tarball processing. When processing a crafted source archive, the getTarSpec() function in tools/rpmbuild.cc passes an attacker-controlled tar archive member name to rpmExpand() as part of a %{basename:...} macro expression. A specially crafted .spec member name can therefore inject RPM macros, including Lua expressions, resulting in arbitrary code execution with the privileges of the user running rpmbuild. This can be exploited when a victim or automated build system processes an attacker-controlled source tarball using rpmbuild tarball mode (such as -ts, -ta, or -tb).

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hummingbird Openshift Ai and 1 more

CVE-2026-84838

Rpm: command injection in rpmuncompress via unescaped filenames passed to popen()

A flaw was found in rpmuncompress. This command injection vulnerability allows a local attacker to execute arbitrary commands. This occurs when rpmuncompress processes a specially crafted archive filename containing shell metacharacters, which are not properly escaped before being passed to shell command strings. Successful exploitation requires user interaction, where a user or automated workflow invokes rpmuncompress on the malicious file, leading to high impact on the confidentiality, integrity, and availability of data accessible to the invoking user.

CVSS 3.1 · 7.8 High EPSS 1.1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hardened Images Hummingbird and 1 more

CVE-2026-84233

Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filenames

A flaw was found in rpm. A local attacker could supply a specially crafted `.gem` filename containing RPM macro syntax. When a user or automated workflow invokes `rpmuncompress -x` on this file, the macro expansion occurs during command construction. This allows the attacker to execute arbitrary commands with the privileges of the invoking account, leading to a compromise of confidentiality, integrity, and availability.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hardened Images Hummingbird and 1 more

CVE-2026-55655

Openssh: local mitm of x11 forwarding via abstract unix socket pre-binding in red hat enterprise linux openssh client versions

A flaw was found in OpenSSH. A local unprivileged attacker on a Linux client host can hijack client-side X11 forwarding connections. This is possible by pre-binding the preferred abstract X socket name when X11 forwarding is enabled and a local UNIX-domain X socket is used. A successful attack can compromise the confidentiality of forwarded X11 traffic, including sensitive window contents and input, and may allow some manipulation of the forwarded session.

CVSS 3.1 · 5 Medium EPSS < 1% KEV · Not listed

Vendors

Openbsd Openssh Redhat

Products

Openssh Openssh Enterprise Linux and 12 more

CVE-2026-55653

Openssh: double free in red hat enterprise linux versions of openssh dh-gex client path during fips known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange (DH-GEX) client path. This occurs during FIPS (Federal Information Processing Standards) mode known-group validation when the client processes attacker-controlled DH-GEX group parameters. Successful exploitation leads to client-side process termination, resulting in a Denial of Service (DoS).

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

Vendors

Openbsd Openssh Redhat

Products

Openssh Openssh Enterprise Linux and 12 more

CVE-2026-13595

Util-linux: util-linux: heap use-after-free in libblkid nested partition probing

A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed

Vendors

Kernel Linux Redhat

Products

Util-linux Util-linux Cost Management On Premise and 8 more

CVE-2026-115207

Patch: filename validation bypass in reversal fallback allows file creation outside the working directory

A flaw was found in GNU patch. An attacker can achieve arbitrary file creation outside the intended working directory by enticing a user or automated workflow to apply a specially crafted patch file. Due to missing validation during automatic patch reversal, absolute file paths in patch headers are accepted rather than rejected. Consequently, the utility can create files in arbitrary locations with the permissions of the executing user.

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

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Hardened Images and 3 more

CVE-2026-43961

Vim: vimscript injection via unescaped filename in netrw s:netrwmarkfile() filter() expression allows arbitrary code execution

A flaw was found in Vim's netrw plugin. A crafted filename containing quote characters and expression fragments can break out of the quoted context during mark/unmark operations, allowing arbitrary Vimscript execution. This can be leveraged to run shell commands with the privileges of the user running Vim.

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

Vendors

Redhat Vim

Products

Enterprise Linux Enterprise Linux Eus Hummingbird and 6 more

CVE-2026-125712

Gst-plugins-base: gst-plugins-base: missing bounds checks in rtcp sdes packet parsing

A flaw was found in GStreamer's gst-plugins-base RTCP SDES packet parser. A remote sender able to reach an active media session can supply a malformed SDES entry whose declared length exceeds the received packet. Missing bounds validation can cause the receiver to read beyond the packet buffer, potentially crashing the application or exposing a limited amount of process memory.

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

Vendors

Redhat

Products

Enterprise Linux Rhel Els

CVE-2026-125704

Gstreamer: gstreamer: use-after-free in gstreamer core buffer value deserialization

A use-after-free flaw was found in GStreamer core buffer value deserialization. When serialized buffer text contains an invalid character, an error path frees a mapped buffer before unmapping it. Applications that parse untrusted caps or structure data can reach a freed-buffer read and may crash. A network-facing GStreamer Data Protocol receiver can process such caps data without user interaction; further impact has not been established.

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

Vendors

Redhat

Products

Enterprise Linux Rhel Els

CVE-2026-121629

Gst-plugins-good: gst-plugins-good: local file disclosure via unvalidated file:// uris in adaptivedemux2 manifest handling

A flaw was found in GStreamer's adaptive streaming demuxers (HLS, DASH, MSS). When processing a media playlist or manifest, URIs referenced in the manifest content are fetched without restricting which URI schemes are permitted. An attacker who controls a manifest URL, or who can inject content into an HTTP manifest response, can include file:// URIs pointing to arbitrary local files, causing the affected application to read and process those files. In automated or server-side deployments such as media recorders, proxies, and downloaders, this can lead to disclosure of sensitive local files. Existence of files can also be inferred through differing error responses even when content is not directly observable.

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

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Enterprise Linux Eus and 1 more

CVE-2026-108094

Mutter: mutter: client-triggered use-after-free in wayland color-management icc image description path

A use-after-free flaw was found in mutter in the Wayland color-management ICC image-description path. A local attacker who can run a malicious Wayland client can destroy a wp_image_description_v1 resource while an asynchronous ICC file read is still in progress. When the read completes, the compositor uses the freed wl_resource, writes into freed memory, and frees a pointer derived from that memory. This can crash the GNOME session and may allow arbitrary code execution within the compositor process.

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

Vendors

Redhat

Products

Enterprise Linux Enterprise Linux Eus Rhel Els

CVE-2026-119528

Gimp: gimp: stack buffer overflow in psd image resource header loader

A flaw was found in GIMP. The PSD plug-in’s image resource header loader uses an incorrect destination size when copying a converted resource name into a fixed stack buffer. Opening a crafted PSD file can cause a stack-based buffer overflow, leading to a crash and potentially arbitrary code execution.

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

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Rhel Els and 1 more

CVE-2026-96442

Emacs: emacs: arbitrary code execution in flymake mode

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.

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

Vendors

Gnu Redhat

Products

Emacs Enterprise Linux Rhel Els

CVE-2023-41175

Libtiff: potential integer overflow in raw2tiff.c

A vulnerability was found in libtiff due to multiple potential integer overflows in raw2tiff.c. This flaw allows remote attackers to cause a denial of service or possibly execute an arbitrary code via a crafted tiff image, which triggers a heap-based buffer overflow.

CVSS 3.1 · 6.5 Medium EPSS 1.3% KEV · Not listed

Vendors

Fedoraproject Libtiff Redhat

Products

Fedora Libtiff Enterprise Linux and 1 more

CVE-2026-119777

Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: stack buffer overflow in h.266/vvc parser

A flaw was found in GStreamer's gst-plugins-bad H.266/VVC parser. When processing a malformed H.266 media file or stream, an integer overflow while parsing profile, tier, and level fields can lead to a stack-based buffer overflow. An attacker could cause an application to crash and may be able to execute code in the context of the affected application.

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

Vendors

Red Hat Redhat

Products

Enterprise Linux Enterprise Linux Enterprise Linux Eus and 1 more

CVE-2026-95619

Gcc: libstdc++ integer overflow in `new` operator

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.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Enterprise Linux Hardened Images Hummingbird and 5 more