The SUSE Linux Enterprise 15 SP7 RT kernel update fixes numerous security vulnerabilities identified by CVE identifiers ranging from CVE-2025-38549 through CVE-2026-46209. These include memory leaks in efivarfs, use-after-free bugs in scsi and bcache, plaintext credential logging in smb client, stack out-of-bounds writes in bpf, and various other kernel subsystem issues. The update addresses these flaws by correcting error handling, validating inputs, preventing race conditions, and fixing resource management bugs to prevent crashes, information leaks, and potential exploitation.

The vulnerabilities fixed in this update could lead to memory leaks, use-after-free conditions, information disclosure, system crashes, and denial of service in affected SUSE Linux Enterprise 15 SP7 RT kernel environments. These issues affect multiple kernel components and could impact system stability and security if left unpatched. No known exploits in the wild have been reported for these vulnerabilities at the time of this advisory.

A security update for the SUSE Linux Enterprise 15 SP7 RT kernel has been released that addresses these vulnerabilities. Applying this official update is the recommended remediation. Patch status is confirmed by the vendor advisory SUSE-SU-2026:2591-1. Users should update their systems to the fixed kernel version as provided by SUSE Product Security Team to mitigate these issues.