CVE-2026-90463 Sssd: local oob read in nss service request parsers (`sss_nss_protocol_parse_svc_name` / `sss_nss_protocol_parse_svc_port`)

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

CVE-2026-90463

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

CVE-2026-90995

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 pamappservices configuration is enabled and the service item is omitted from the...

CVE-2026-90994

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This...

CVE-2026-90463

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

Astra Linux – Vulnerability in sudo

A flaw was discovered in sudo’s handling of ipahostname. In this process, the ipahostname value from /etc/sssd/sssd.conf was not propagated to sudo. As a result, this leads to a privilege management vulnerability in applications, where client hosts retain privileges even after those privileges ha...

CVE-2026-90463: Out-of-bounds Read

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

CVE-2026-90995: NULL Pointer Dereference

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 pamappservices configuration is enabled and the service item is omitted from the...

CVE-2026-90994: Out-of-bounds Read

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body. This...

PT-2026-91262

Name of the Vulnerable Software and Affected Versions SSSD System Security Services Daemon affected versions not specified Description A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder socket can send a specially crafted protocol request. When the p...

PT-2026-91261

A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pam parse in data. A local client with access to the PAM responder's UNIX socket can exploit this by negotiating protocol v1 and sending an empty or truncated PAM request body...

PT-2026-91254

A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to the NSS responder's UNIX socket, to cause an out-of-bounds read. This out-of-bounds read may lead to a denial of service DoS by crashing...

PT-2026-91263

Name of the Vulnerable Software and Affected Versions sssd affected versions not specified Description A flaw in the Network Security Services NSS responder allows a local unprivileged user to trigger a denial-of-service condition. By sending a specially crafted request with a zero-length body, t...

CVE-2026-90996: Integer Underflow (Wrap or Wraparound)

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 affect...

Linux Distros Unpatched Vulnerability : CVE-2026-90463

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in the sssd NSS responder. This input validation vulnerability allows a local attacker, by sending specially crafted service lookup requests to...

Linux Distros Unpatched Vulnerability : CVE-2026-90994

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in sssd, specifically within the PAM Pluggable Authentication Modules responder's protocol v1 parser, pamparseindata. A local client with acces...

Linux Distros Unpatched Vulnerability : CVE-2026-90995

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A flaw was found in SSSD System Security Services Daemon. A local attacker with privileges to connect to the PAM Pluggable Authentication Modules responder sock...

Linux Distros Unpatched Vulnerability : CVE-2026-90996

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

SUSE CVE-2026-87853

A flaw was found in SSSD's IdP authentication provider. The evalaccesstokenbuf function compares the OIDC subject identifier using strncmp with the authenticated user's identifier length, performing a prefix comparison instead of an exact match. An attacker whose IdP identifier is a strict prefix...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS : SSSD vulnerability (USN-8718-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8718-1 advisory. It was discovered that SSSD did not properly validat...