Security update for the Linux Kernel (Live Patch 3 for SUSE Linux Enterprise 15 SP7)
This update for the SUSE Linux Enterprise kernel 6.4.0-150700.53.11 fixes various security issues The following security issues were fixed: - CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480). - CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473). - CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439).
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
This update for the SUSE Linux Enterprise kernel 6.4.0-150700.53.11 fixes various security issues The following security issues were fixed: - CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480). - CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473). - CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439).
05 / REFERENCES
Further evidence
- https://bugzilla.suse.com/1249480
- https://bugzilla.suse.com/1253439
- https://bugzilla.suse.com/1253473
- https://www.suse.com/security/cve/CVE-2025-39742
- https://www.suse.com/security/cve/CVE-2025-40129
- https://www.suse.com/security/cve/CVE-2025-40186
- https://www.suse.com/support/update/announcement/2026/suse-su-20260555-1/