{"id":"CVE-2026-98593","state":"PUBLISHED","title":"s390/debug: Fix NULL pointer dereference in debug_info_copy()","description":"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.","publishedAt":"2026-10-18T15:19:05.272Z","updatedAt":"2026-10-19T09:22:18.775Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"a19bede30f0da5ae56782edac62b5998a7434cba","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"33f706884821da9cb55b650b7b1d4f2bdf800137","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"9c6af88fbefbe77608b77409df23a1617e28398c","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"c593f38e1cdb92f87d01be4c4e5ac12417b1454b","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"012bfcd5a51082d5a65f096dfb9ca652b5267965","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":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","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/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225","https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba","https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137","https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b","https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c","https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b","https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98593.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98593","state":"PUBLISHED","datePublished":"2026-10-18T15:19:05.272Z","dateUpdated":"2026-10-19T09:22:18.775Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.359Z"},"containers":{"cna":{"title":"s390/debug: Fix NULL pointer dereference in debug_info_copy()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"a19bede30f0da5ae56782edac62b5998a7434cba","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"33f706884821da9cb55b650b7b1d4f2bdf800137","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"9c6af88fbefbe77608b77409df23a1617e28398c","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"c593f38e1cdb92f87d01be4c4e5ac12417b1454b","versionType":"git"},{"version":"d72541f945127b4873dace501406a1bc8cd8e1e9","status":"affected","lessThan":"012bfcd5a51082d5a65f096dfb9ca652b5267965","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":"5.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.15","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","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/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225"},{"url":"https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba"},{"url":"https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137"},{"url":"https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b"},{"url":"https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c"},{"url":"https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b"},{"url":"https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:22:18.775Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}