Red Hat Enterprise Linux 9 at a glance
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 51 | 0 |
| Oct 2026 | 145 | 2 |
| Sep 2026 | 134 | 2 |
| Aug 2026 | 97 | 1 |
| Jul 2026 | 87 | 1 |
| Jun 2026 | 82 | 0 |
| May 2026 | 24 | 2 |
| Apr 2026 | 38 | 1 |
| Mar 2026 | 38 | 0 |
| Feb 2026 | 18 | 1 |
| Jan 2026 | 18 | 1 |
| Dec 2025 | 7 | 0 |
| Nov 2025 | 14 | 1 |
| Oct 2025 | 10 | 0 |
| Sep 2025 | 13 | 1 |
| Aug 2025 | 8 | 0 |
| Jul 2025 | 19 | 0 |
| Jun 2025 | 28 | 3 |
| May 2025 | 17 | 0 |
| Apr 2025 | 28 | 1 |
| Mar 2025 | 13 | 0 |
| Feb 2025 | 25 | 0 |
| Jan 2025 | 11 | 1 |
| Dec 2024 | 1 | 0 |
Most common weaknesses
1,263 results · Feed
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Medium 5.5
Sssd: sssd: null pointer dereference in pam responder when protocol version negotiation is skipped
A flaw was found in SSSD's PAM responder. A local attacker can send an authentication request without first negotiating the client protocol version. The responder dereferences a NULL protocol-version pointer and crashes, disrupting SSSD-backed authentication.…
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Medium 5.5
Sssd: sssd: local denial of service through unchecked oauth2 json code type in pam responder
A flaw was found in SSSD's PAM responder on builds with the JSON PAM extension enabled. A local attacker can submit a crafted authentication request containing a non-string OAuth2 code value. Missing JSON type validation leads to a NULL pointer dereference, t…
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Medium 5.9
Sssd: sssd: stack buffer overflow during rsa certificate-to-ssh key conversion
A flaw was found in SSSD's conversion of X.509 certificate RSA public keys to SSH keys. Missing size checks before copying RSA components into fixed-size stack buffers can cause a stack buffer overflow. An attacker able to supply a certificate with oversized …
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Medium 5.5
Cpio: cpio: stack-based buffer overflow in write_out_tar_header() with long usernames/groupnames
A flaw was found in cpio. A local user can cause a Denial of Service (DoS) by triggering a stack-based buffer overflow when creating archives in tar or ustar formats. When archiving files owned by users or groups with names exceeding 32 characters, cpio copie…
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High 7.9
Sandboxed-containers: kernel: systemd-gpt-auto-generator: guest data leakage in confidential computing (sandboxed containers)
A flaw was found in the interaction between systemd-gpt-auto-generator and confidential computing guest VM images in OpenShift Sandboxed Containers (confidential peer pods). systemd-gpt-auto-generator automatically discovers and mounts GPT partitions by type …
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High 7.5
Freeradius: stack buffer overflow via unchecked eap-fast sessionticket length
A flaw was found in freeradius. An improper length validation in the EAP-FAST module allows a stack-based buffer overflow during session ticket processing. A remote, unauthenticated attacker can exploit this flaw by sending a specially crafted handshake reque…
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High 7.5
Freeradius: stack-based buffer overflow via unbounded eap-sim identity length
A flaw was found in freeradius's Extensible Authentication Protocol Method for Subscriber Identity Module (EAP-SIM) module. When handling authentication requests, the server copies a client-supplied identity into an internal structure without properly checkin…
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Low 3.9
Ansible.posix: authorized_key module follows a parent-directory symlink allowing writes outside the intended directory
A link-following flaw was found in the authorized_key module of the ansible.posix collection, residual to the fix for CVE-2026-11837. That fix guards only the final path component (os.chown with follow_symlinks=False and O_NOFOLLOW in _safe_open_write()). Whe…
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High 7.3
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 ca…
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High 7.8
Xfsprogs: xfsprogs: local privilege escalation via command injection in xfs_admin
A flaw was found in the xfs_admin utility in xfsprogs. The tool does not properly validate user-supplied parameters, allowing operating system command injection. A local attacker can exploit this issue by providing crafted input arguments, which may result in…
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High 7.5
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…
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Medium 6.5
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.…
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Medium 4.2
Libstdc++: overflow leaves streambuf in inconsistent state on i/o error.
A flaw was found in libstdc++. When a byte-by-byte write operation fails during file stream processing, the library may still append data into the internal memory buffer. An attacker capable of inducing repeated write failures in an affected service can trigg…
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High 7.1
Gst-plugins-bad: gst-plugins-bad: off-by-one write in mxf demuxer temporal offset table
A flaw was found in GStreamer's MXF demuxer. When an application processes a crafted MXF file, an off-by-one bounds check can allow a one-byte write past the logical end of a temporal offset array. This may corrupt memory and cause the application to crash. T…
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Medium 6.5
Gst-plugins-bad: gst-plugins-bad: missing bounds checks in mpeg ps pes header parsing
A flaw was found in GStreamer's gst-plugins-bad MPEG Program Stream demuxer and resindvd DVD-playback plugin. The PES header parsers do not adequately check remaining data before reading timestamps and optional header fields. Opening a specially crafted MPEG …
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High 7.5
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 receiv…
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Medium 6.5
Gst-plugins-bad: gst-plugins-bad: bounds check errors in mxf vanc packet handling
A flaw was found in the GStreamer gst-plugins-bad MXF plugin. Insufficient bounds checks when parsing crafted VANC data can cause an out-of-bounds read in the demuxer, while an incorrect buffer size calculation when muxing multiple ancillary packets can cause…
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Medium 6.6
Cockpit: cockpit-storaged: tang keyserver address from an untrusted luks header clevis token reaches curl's argument vector as an option
A flaw was found in cockpit-storaged. A Tang keyserver address read from a clevis token in a LUKS header is concatenated into curl's argument vector without a "--" separator. An address beginning with "-" is parsed by curl as an option instead of a hostname, …
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High 7.5
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 re…
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Medium 5.9CVE-2026-122056 Public exploit
Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service
A flaw was found in OpenSCAP. A heap-based buffer overflow can occur when processing a specially crafted Extensible Configuration Checklist Description Format (XCCDF) document using the sds-compose option. An attacker could exploit this vulnerability to corru…
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High 7.5
Krb5: mit krb5 gss-rpc client memory leak on xid mismatch retries
clnttcp_call() in lib/rpc/clnt_tcp.c in MIT Kerberos 5 (aka krb5) does not free the RPC reply verifier between retries, which allows remote attackers to cause a denial of service (memory leak in GSS-RPC client programs) by injecting RPC replies with mismatche…
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High 7.5
Krb5: mit krb5 kadmind unauthenticated memory leak dos via auth_gssapi_init error paths
The AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) does not free decoded arguments on certain error paths, which allows remote attackers to cause a denial of service (memory exhaustion in kadmind) via crafted AUTH_GSSAPI_INIT re…
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High 7.5
Krb5: mit krb5 kadmind unauthenticated memory leak dos via gss-rpc auth flavor switching
The GSS-RPC transport layer in MIT Kerberos 5 (aka krb5) 1.4 and later does not release the previous authentication context when a client switches from an RPCSEC_GSS or AUTH_GSSAPI flavor to a non-GSS flavor on the same TCP connection. This allows remote atta…
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Medium 6.5
Krb5: mit krb5 kadmind authenticated memory exhaustion dos via unbounded rpc xdr allocation
The GSS-RPC layer in MIT Kerberos 5 (aka krb5) does not enforce size limits on XDR-decoded data, which allows remote authenticated users to cause a denial of service (memory exhaustion or excessive CPU consumption in kadmind) via crafted RPC requests that tri…
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Medium 6.5
Krb5: mit krb5 kadmind authenticated dos exploiting dereference of null policy name pointers
The policy RPC stubs in kadmin/server/server_stubs.c in MIT Kerberos 5 (aka krb5) 1.5.3 and later do not reject a NULL policy name decoded by xdr_nullstring(), which allows remote authenticated users to cause a denial of service (kadmind crash via NULL pointe…
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Medium 6.5
Krb5: mit krb5 kadmind authenticated memory leak dos in xdr_krb5_tl_data() decode failure
xdr_krb5_tl_data() in lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) does not free partially decoded data on failure, which allows remote authenticated users to cause a denial of service (memory leak in kadmind) via crafted RPC requests that trigger a …
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Medium 5.3
Krb5: mit krb5 kdc unauthenticated memory leak dos in kdb keytab key decryption error path
krb5_ktkdb_get_entry() in lib/kdb/keytab.c in MIT Kerberos 5 (aka krb5) 1.2.8 and later does not free decrypted key material when a post-decryption check fails, which allows remote attackers to cause a denial of service (memory leak in the KDC or kadmind) via…
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Medium 5.3
Krb5: mit krb5 kadmind unauthenticated memory leak dos in rpcsec_gss buffer decode failure
The RPCSEC_GSS authentication routines in lib/rpc/authgss_prot.c in MIT Kerberos 5 (aka krb5) 1.4 and later do not free partially decoded buffers on failure, which allows remote attackers to cause a denial of service (memory leak in kadmind) via crafted RPCSE…
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High 7.5
Krb5: mit krb5 kdc unauthenticated cpu dos via quadratic asn.1 sequence of decoding
decode_sequence_of() in lib/krb5/asn.1/asn1_encode.c in MIT Kerberos 5 (aka krb5) 1.11 and later grows the decoded element array one entry at a time, which allows remote attackers to cause a denial of service (CPU consumption in the KDC) by sending an unauthe…
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High 7.5
Krb5: mit krb5 kadmind unauthenticated memory exhaustion via failed auth_gssapi_init requests
The AUTH_GSSAPI handler in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) 1.5.2 and later allows remote attackers to cause a denial of service (memory exhaustion in kadmind) by sending repeated failed AUTH_GSSAPI_INIT requests. Each failed request all…
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High 7.5
Krb5: mit krb5 kadmind unauthenticated cpu dos via auth_gssapi client states cleanup
clean_client() in lib/rpc/svc_auth_gssapi.c in MIT Kerberos 5 (aka krb5) restarts its scan from the head of the client list after each removal, resulting in quadratic CPU cost. Remote attackers can cause a denial of service (CPU consumption in kadmind) by acc…
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Medium 5.5
Gst-plugins-good: gst-plugins-good: qtdemux out-of-bounds heap read from invalid uncompressed video layout
A flaw was found in GStreamer's gst-plugins-good MOV/MP4 demuxer. When processing an uncompressed video track, qtdemux fails to validate the declared row alignment and chroma geometry before using them to build a video buffer layout. A crafted file can cause …
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Medium 6.5
Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle parser causes denial of service
A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of …
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Medium 6.7
Ansible-core: ansible-core: ansible.builtin.git invokes git without a `--` separator, allowing argument injection via a `-`-leading repository url (e.g. --upload-pack) -> rce
A flaw was found in ansible-core's ansible.builtin.git module. The module invokes git (ls-remote, clone, fetch) with the repository URL as a positional argument and without a "--" separator, so a repository URL that begins with a dash is interpreted by git as…
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Medium 6.5
Gstreamer1-plugins-bad-free: gst-plugins-bad: use of uninitialized gsth265hrdparams in gst_h265_parse_vps() multi-hrd workaround loop
A flaw was found in GStreamer's gst-plugins-bad package. A use of uninitialized memory vulnerability exists in the H.265 (HEVC) bitstream parser when processing Video Parameter Sets that declare more than one HRD (Hypothetical Reference Decoder) parameter set…
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Medium 6.1
Gstreamer1-plugins-bad-free: gstreamer1-plugins-bad-free: out-of-bounds read in mxfdemux via unchecked delta_id and slice index
A flaw was found in GStreamer's MXF demuxer plugin (gst-plugins-bad). When processing a specially crafted MXF media file, the demuxer indexes its internal delta-entry and slice-offset tables using values from the file without validating that they are within t…
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High 8.2
Gstreamer1-plugins-good: gstreamer1-plugins-good: out-of-bounds heap read in mtap16/mtap24 h.264 rtp depayloader via signed/unsigned underflow
A flaw was found in GStreamer's gst-plugins-good, specifically in the H.264 RTP depayloader element. When processing MTAP16 or MTAP24 multi-time aggregation RTP packets, a signed/unsigned integer conversion error causes the remaining-length counter to underfl…
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High 7.5
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 man…
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Medium 4.4
Podman: containers-common: containers-common: default seccomp af_vsock/netlink_audit deny rules bypassable via 32-bit truncation
A flaw was found in the default seccomp profile used by Podman via containers-common. Deny rules for AF_VSOCK and NETLINK_AUDIT compared socket arguments with unmasked 64-bit equality. Because the kernel truncates those int arguments to 32 bits, setting upper…
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Medium 6.2
Dbus: dbus-daemon: dbus-daemon aborts (reply_serial != 0) when a broadcast from the driver cannot be delivered to a monitored bus
A flaw was found in D-Bus. With a privileged Monitoring client attached (for example dbus-monitor or busctl monitor), an unprivileged local user can cause dbus-daemon to abort if a driver-originated broadcast such as NameOwnerChanged or ActivatableServicesCha…