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CVE-2026-68742

Sssd: sssd: nss responder out-of-bounds read via unchecked addrlen in gethostbyaddr

A flaw was found in SSSD. The sss_nss_protocol_parse_addr() function in the NSS responder does not validate the addrlen field against the remaining packet body size. A local attacker can exploit this via a crafted GETHOSTBYADDR request to the NSS responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-68743

Sssd: sssd: pam responder out-of-bounds read via unchecked auth_token_length in protocol v1

A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-54231

Abrt: unsanitized systemd journal content written to dump directory files enables content injection

A content injection vulnerability was found in the ABRT post-create event handler scripts in libreport. The event script queries the systemd journal for log entries matching the crashed process and writes the results to files in the dump directory without sanitizing embedded control characters. A local user can inject arbitrary content into the journal output by embedding newline characters in syslog messages, controlling the content that root writes to dump directory files.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Fedora Automatic Bug Reporting Tool Enterprise Linux and 5 more
CVE-2026-104048

Sssd: sssd: authorization bypass via cross-domain username collision in hbac evaluation

A flaw was found in SSSD. In trust-enabled identity management environments, SSSD evaluates Host-Based Access Control (HBAC) rules by stripping domain qualifiers and comparing only short usernames. An authenticated user in a trusted domain who shares the same username as an authorized local account can bypass access policies and gain unauthorized access to protected services or hosts.

CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104047

Sssd: sssd: information disclosure via query injection in entra id lookups

A flaw was found in SSSD. When configured to use Microsoft Entra ID, search inputs are not properly sanitized before being incorporated into directory query filters. A local user can exploit this vulnerability by submitting a crafted lookup request, manipulating the query logic to cause unauthorized information disclosure from the directory.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104046

Sssd: sssd: denial of service via incomplete identity provider authentication requests

A flaw was found in SSSD (System Security Services Daemon). When Identity Provider (IdP) authentication is enabled, pre-authentication requests retain state in memory without being cleared or timed out. A local attacker can repeatedly initiate authentication flows without completing them, causing unbounded memory consumption. This memory exhaustion can lead to a Denial of Service (DoS) by degrading or terminating SSSD authentication services.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104045

Sssd: sssd: denial of service via race condition in autofs responder

A flaw was found in SSSD. A local user can trigger a Denial of Service (DoS) by exploiting a race condition in the autofs responder between asynchronous enumeration completion and map invalidation. By repeatedly sending concurrent map enumeration and invalidation requests, an attacker can cause memory to leak, leading to excessive memory consumption that can disrupt or crash the autofs service.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104039

Sssd: sssd: denial of service via stale connection state reuse in pam gssapi responder

A flaw was found in SSSD. A local user can cause a denial of service (DoS) by disrupting system authentication services. When handling Generic Security Services Application Programming Interface (GSSAPI) authentication in the Pluggable Authentication Module (PAM) responder, cached connection state is freed upon completion without clearing the reference pointer. An attacker can exploit this by sending an additional request over the same connection, causing the service to access invalid memory and unexpectedly terminate.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104032

Sssd: sssd: denial of service via unprivileged autofs cache invalidation

A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2026-104031

Sssd: sssd: denial of service via memory exhaustion in autofs responder

A flaw was found in SSSD. In configurations where the autofs responder service is enabled, memory allocated during successful request processing is not released until the client connection terminates. A local attacker can exploit this vulnerability by maintaining an open connection and repeatedly submitting valid requests, leading to memory exhaustion and a Denial of Service (DoS).

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-2026-104030

Sssd: sssd: denial of service via out-of-bounds read during passkey parsing

A flaw was found in sssd. This vulnerability allows a local user to cause a Denial of Service (DoS) by submitting a specially crafted passkey authentication token that lacks null terminators. The authentication service reads past the end of the provided memory buffer, causing the process to crash and disrupting authentication services.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Openshift and 3 more
CVE-2024-27834

webkit: pointer authentication bypass

The issue was addressed with improved checks. This issue is fixed in Safari 17.5, iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Sonoma 14.5, tvOS 17.5, watchOS 10.5. An attacker with arbitrary read and write capability may be able to bypass Pointer Authentication.

CVSS 3.1 · 5.5 Medium EPSS 1.5% KEV · Listed
Vendors
Apple Fedoraproject Redhat and 2 more
Products
Ipados Iphone Os Macos and 8 more
CVE-2024-3056

Podman: kernel: containers in shared ipc namespace are vulnerable to denial of service attack

A flaw was found in Podman. This issue may allow an attacker to create a specially crafted container that, when configured to share the same IPC with at least one other container, can create a large number of IPC resources in /dev/shm. The malicious container will continue to exhaust resources until it is out-of-memory (OOM) killed. While the malicious container's cgroup will be removed, the IPC resources it created are not. Those resources are tied to the IPC namespace that will not be removed until all containers using it are stopped, and one non-malicious container is holding the namespace open. The malicious container is restarted, either automatically or by attacker control, repeating the process and increasing the amount of memory consumed. With a container configured to restart always, such as `podman run --restart=always`, this can result in a memory-based denial of service of the system.

CVSS 3.1 · 7.7 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Podman Project Redhat
Products
Fedora Podman Enterprise Linux and 3 more
CVE-2023-6270

Kernel: aoe: improper reference count leads to use-after-free vulnerability

A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution.

CVSS 3.1 · 7 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 2 more
CVE-2024-1151

Kernel: stack overflow problem in open vswitch kernel module leading to dos

A vulnerability was reported in the Open vSwitch sub-component in the Linux Kernel. The flaw occurs when a recursive operation of code push recursively calls into the code block. The OVS module does not validate the stack depth, pushing too many frames and causing a stack overflow. As a result, this can lead to a crash or other related issues.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 3 more
CVE-2024-1062

389-ds-base: a heap overflow leading to denail-of-servce while writing a value larger than 256 chars (in log_entry_attr)

A heap overflow flaw was found in 389-ds-base. This issue leads to a denial of service when writing a value larger than 256 chars in log_entry_attr.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Fedora 389 Directory Server Directory Server and 14 more
CVE-2024-1048

Grub2: grub2-set-bootflag can be abused by local (pseudo-)users

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.

CVSS 3.1 · 3.3 Low EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Gnu Redhat
Products
Fedora Grub2 Enterprise Linux and 1 more
CVE-2024-0607

Kernel: nf_tables: pointer math issue in nft_byteorder_eval()

A flaw was found in the Netfilter subsystem in the Linux kernel. The issue is in the nft_byteorder_eval() function, where the code iterates through a loop and writes to the `dst` array. On each iteration, 8 bytes are written, but `dst` is an array of u32, so each element only has space for 4 bytes. That means every iteration overwrites part of the previous element corrupting this array of u32. This flaw allows a local user to cause a denial of service or potentially break NetFilter functionality.

CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 2 more
CVE-2024-0567

Gnutls: rejects certificate chain with distributed trust

A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to initiate a denial of service attack.

CVSS 3.1 · 7.5 High EPSS 1.4% KEV · Not listed
Vendors
Debian Fedoraproject Gnu and 2 more
Products
Debian Linux Fedora Gnutls and 7 more