{"id":"CVE-2026-98593","summary":"s390/debug: Fix NULL pointer dereference in debug_info_copy()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/debug: Fix NULL pointer dereference in debug_info_copy()\n\nWhen debug_register_static() fails, it clears areas, active_pages and\nactive_entries but leaves the area bounds unchanged. Copying such an\narea, either by opening its view file or via debug_dump(), makes\ndebug_info_copy() dereference the NULL pointers.\n\nSkip the copy loop when the source has no areas.","modified":"2026-10-19T02:46:50.468927812Z","published":"2026-10-18T15:19:05.272Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98593.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965"},{"type":"WEB","url":"https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98593.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98593"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d72541f945127b4873dace501406a1bc8cd8e1e9"},{"fixed":"13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225"},{"fixed":"a19bede30f0da5ae56782edac62b5998a7434cba"},{"fixed":"33f706884821da9cb55b650b7b1d4f2bdf800137"},{"fixed":"2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b"},{"fixed":"9c6af88fbefbe77608b77409df23a1617e28398c"},{"fixed":"c593f38e1cdb92f87d01be4c4e5ac12417b1454b"},{"fixed":"012bfcd5a51082d5a65f096dfb9ca652b5267965"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98593.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.15.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98593.json"}}],"schema_version":"1.9.0"}