{"id":"CVE-2026-97980","title":"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…","summary":"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…","severity":"medium","vendor":"Linux","product":"Linux","affected":["Linux >= a2cec6863709d6673a025acc066c962b85a75842 < 716e1cd3783806929407dbd596e6b1118971eb9e","Linux >= a2cec6863709d6673a025acc066c962b85a75842 < b1eb31d533cdfcae1011ed53850d52f36afe5774","Linux 7.2"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T11:17:26.023","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97980","references":[{"url":"https://git.kernel.org/stable/c/716e1cd3783806929407dbd596e6b1118971eb9e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b1eb31d533cdfcae1011ed53850d52f36afe5774","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97980.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97980"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541049"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97980"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97980"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97980.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ingestedAt":"2026-09-25T11:06:38.869Z","epss":0.00155,"epssPercentile":0.04618,"cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"slug":"CVE-2026-97980","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 6 · no fix planned: Red Hat Enterprise Linux 6 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97980.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213305,"id":"CVE-2026-97980","ts":1790754685801,"field":"cvss","old":null,"new":"5.5"},{"seq":213304,"id":"CVE-2026-97980","ts":1790754685801,"field":"severity","old":"none","new":"medium"}]}