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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-2026-90995

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-2026-6245

Sssd: out-of-bounds read in the sssd

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat
Products
Sssd Enterprise Linux Openshift and 2 more
CVE-2026-12610

Sssd: use-after-free crash in sssd' 'sssd_pam' process

A flaw was found in sssd. When authenticating with a YubiKey, the SSSD PAM responder can crash due to a use-after-free vulnerability, where a memory pointer is incorrectly handled. A local attacker could exploit this flaw by manipulating smartcard or YubiKey contents, leading to a denial of service that disrupts authentication. This vulnerability also presents a potential for privilege escalation, although it is difficult to exploit.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat Sssd
Products
Sssd Enterprise Linux Hardened Images and 6 more
CVE-2023-4147

Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 7 more
CVE-2023-5157

Mariadb: node crashes with transport endpoint is not connected mysqld got signal 6

A vulnerability was found in MariaDB. An OpenVAS port scan on ports 3306 and 4567 allows a malicious remote client to cause a denial of service.

CVSS 3.1 · 7.5 High EPSS 2.3% KEV · Not listed
Vendors
Fedoraproject Mariadb Redhat
Products
Fedora Mariadb Enterprise Linux and 15 more
CVE-2023-39197

Kernel: dccp: conntrack out-of-bounds read in nf_conntrack_dccp_packet()

An out-of-bounds read vulnerability was found in Netfilter Connection Tracking (conntrack) in the Linux kernel. This flaw allows a remote user to disclose sensitive information via the DCCP protocol.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Linux Redhat
Products
Fedora Linux Kernel Enterprise Linux and 1 more
CVE-2023-3772

Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.

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 6 more
CVE-2023-4527

Glibc: stack read overflow in getaddrinfo in no-aaaa mode

A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.

CVSS 3.1 · 6.5 Medium EPSS 1.7% KEV · Not listed
Vendors
Fedoraproject Gnu Netapp and 1 more
Products
Fedora Glibc H300s and 30 more
CVE-2023-4091

Samba: smb clients can truncate files with read-only permissions

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions.

CVSS 3.1 · 6.5 Medium EPSS 1.3% KEV · Not listed
Vendors
Fedoraproject Redhat Samba
Products
Fedora Enterprise Linux Enterprise Linux Eus and 5 more
CVE-2023-3773

Kernel: xfrm: out-of-bounds read of xfrma_mtimer_thresh nlattr

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to cause a 4 byte out-of-bounds read of XFRMA_MTIMER_THRESH when parsing netlink attributes, leading to potential leakage of sensitive heap data to userspace.

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 2 more
CVE-2023-4273

Kernel: exfat: stack overflow in exfat_get_uniname_from_ext_entry

A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 2 more
Products
Debian Linux Fedora Linux Kernel and 10 more
CVE-2023-4004

Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()

A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 2 more
Products
Debian Linux Fedora Linux Kernel and 11 more
CVE-2023-4911

Glibc: buffer overflow in ld.so leading to privilege escalation

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

CVSS 3.1 · 7.8 High EPSS 63.8% KEV · Listed
Vendors
Canonical Debian Fedoraproject and 4 more
Products
Ubuntu Linux Debian Linux Fedora and 49 more
CVE-2023-43789

Libxpm: out of bounds read on xpm with corrupted colormap

A vulnerability was found in libXpm where a vulnerability exists due to a boundary condition, a local user can trigger an out-of-bounds read error and read contents of memory on the system.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Libxpm Project Redhat
Products
Fedora Libxpm Enterprise Linux and 1 more
CVE-2023-43787

Libx11: integer overflow in xcreateimage() leading to a heap overflow

A vulnerability was found in libX11 due to an integer overflow within the XCreateImage() function. This flaw allows a local user to trigger an integer overflow and execute arbitrary code with elevated privileges.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat X.org
Products
Fedora Enterprise Linux Rhel Els and 1 more
CVE-2023-43785

Libx11: out-of-bounds memory access in _xkbreadkeysyms()

A vulnerability was found in libX11 due to a boundary condition within the _XkbReadKeySyms() function. This flaw allows a local user to trigger an out-of-bounds read error and read the contents of memory on the system.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Fedoraproject Redhat X.org
Products
Fedora Enterprise Linux Rhel Els and 1 more
CVE-2023-42756

Kernel: netfilter: race condition between ipset_cmd_add and ipset_cmd_swap

A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of `__ip_set_put` on a wrong `set`. This issue may allow a local user to crash the system.

CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
Vendors
Debian Fedoraproject Linux and 1 more
Products
Debian Linux Fedora Linux Kernel and 2 more