{"id":"CVE-2026-97980","state":"PUBLISHED","title":"s390/debug: Fix NULL pointer dereference in debug_set_level()","description":"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.","publishedAt":"2026-09-25T10:23:17.075Z","updatedAt":"2026-10-19T09:11:47.427Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a2cec6863709d6673a025acc066c962b85a75842","status":"affected","lessThan":"716e1cd3783806929407dbd596e6b1118971eb9e","versionType":"git"},{"version":"a2cec6863709d6673a025acc066c962b85a75842","status":"affected","lessThan":"b1eb31d533cdfcae1011ed53850d52f36afe5774","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/debug.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.2","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/debug.c"]}],"references":["https://git.kernel.org/stable/c/716e1cd3783806929407dbd596e6b1118971eb9e","https://git.kernel.org/stable/c/b1eb31d533cdfcae1011ed53850d52f36afe5774"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97980.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97980","state":"PUBLISHED","datePublished":"2026-09-25T10:23:17.075Z","dateUpdated":"2026-10-19T09:11:47.427Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:18:58.208Z"},"containers":{"cna":{"title":"s390/debug: Fix NULL pointer dereference in debug_set_level()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a2cec6863709d6673a025acc066c962b85a75842","status":"affected","lessThan":"716e1cd3783806929407dbd596e6b1118971eb9e","versionType":"git"},{"version":"a2cec6863709d6673a025acc066c962b85a75842","status":"affected","lessThan":"b1eb31d533cdfcae1011ed53850d52f36afe5774","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/debug.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.2","versionType":"semver"},{"version":"7.2.7","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/debug.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/716e1cd3783806929407dbd596e6b1118971eb9e"},{"url":"https://git.kernel.org/stable/c/b1eb31d533cdfcae1011ed53850d52f36afe5774"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:11:47.427Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}