{"id":"CVE-2026-97980","summary":"s390/debug: Fix NULL pointer dereference in debug_set_level()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/debug: Fix NULL pointer dereference in debug_set_level()\n\nCommit a2cec6863709 (\"s390/debug: Add s390dbf kernel parameter\")\nincorrectly removed a null-id check from debug_set_level(), introducing\na possible NULL pointer dereference for debug-API users that put\ndebug_register() results unchecked into debug_set_level().\n\nFix this by moving the check from the internal _debug_set_level()\nvariant back to the external debug_set_level() wrapper.","modified":"2026-09-26T03:48:27.894671331Z","published":"2026-09-25T10:23:17.075Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97980.json","cna_assigner":"Linux"},"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/716e1cd3783806929407dbd596e6b1118971eb9e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b1eb31d533cdfcae1011ed53850d52f36afe5774"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97980.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97980"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a2cec6863709d6673a025acc066c962b85a75842"},{"fixed":"716e1cd3783806929407dbd596e6b1118971eb9e"},{"fixed":"b1eb31d533cdfcae1011ed53850d52f36afe5774"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97980.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.2.0"},{"fixed":"7.2.7"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-97980.json"}}],"schema_version":"1.9.0"}