Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: s390/debug: Fix NULL pointer dereference in debug_info_copy() When debug_register_static() fails, it clears areas, active_pages and active_entries but leaves the area bounds unchanged. Copying such an area, either by opening its view file or via debug_dump(), makes debug_info_copy() dereference the NULL pointers. Skip the copy loop when the source has no areas.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4019

  Linux Kernel: Multiple vulnerabilities Translated from German

  CVE-2026-98866CVE-2026-98624CVE-2026-98745+326 more CVEs

[ References ]References

• git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965
• git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225
• git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b
• git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137
• git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c
• git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba
• git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b