CVE-2025-58364

A flaw was found in the CUPS printing system’s ipp_read_io() function, which handles Internet Printing Protocol (IPP) requests. When processing specially crafted printer attribute responses, improper validation can cause a null pointer dereference. This leads to a crash in libcups, potentially disrupting printing services. Since CUPS is widely deployed on Linux systems for printer discovery and management, this issue can cause denial-of-service (DoS) across multiple machines on a local network.

The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate . The flaw can be remotely exploited within local subnets to crash CUPS services without requiring authentication or user interaction. In cases where machines expose IPP services to the internet, the vulnerability may be exploitable over the network. The root cause is improper deserialization and validation of printer attributes in the ipp_read_io() function, leading to null pointer dereference and denial-of-service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.