{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98593", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.359Z", "datePublished": "2026-10-18T15:19:05.272Z", "dateUpdated": "2026-10-19T09:22:18.775Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:22:18.775Z"}, "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/s390/kernel/debug.c"], "versions": [{"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "a19bede30f0da5ae56782edac62b5998a7434cba", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "33f706884821da9cb55b650b7b1d4f2bdf800137", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "9c6af88fbefbe77608b77409df23a1617e28398c", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "c593f38e1cdb92f87d01be4c4e5ac12417b1454b", "status": "affected", "versionType": "git"}, {"version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "lessThan": "012bfcd5a51082d5a65f096dfb9ca652b5267965", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/s390/kernel/debug.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.55", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.9", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}]}]}], "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"}], "title": "s390/debug: Fix NULL pointer dereference in debug_info_copy()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/s390/kernel/debug.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "a19bede30f0da5ae56782edac62b5998a7434cba", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "33f706884821da9cb55b650b7b1d4f2bdf800137", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "9c6af88fbefbe77608b77409df23a1617e28398c", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "c593f38e1cdb92f87d01be4c4e5ac12417b1454b", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}, {"lessThan": "012bfcd5a51082d5a65f096dfb9ca652b5267965", "status": "affected", "version": "d72541f945127b4873dace501406a1bc8cd8e1e9", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/s390/kernel/debug.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.15"}, {"lessThan": "5.15", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.55", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-98593", "lastModified": "2026-10-19T10:19:20.473", "metrics": {}, "published": "2026-10-18T16:17:11.933", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/012bfcd5a51082d5a65f096dfb9ca652b5267965"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/13decd3b3b3a4d8a2e603fb8c9ffde0c6be3c225"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2de9c458cc49d8db6408a7c5fbf0c7c94fe4d52b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/33f706884821da9cb55b650b7b1d4f2bdf800137"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9c6af88fbefbe77608b77409df23a1617e28398c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a19bede30f0da5ae56782edac62b5998a7434cba"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c593f38e1cdb92f87d01be4c4e5ac12417b1454b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: s390/debug: Fix NULL pointer dereference in debug_info_copy()", "id": "2555038", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555038"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.1", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ns390/debug: Fix NULL pointer dereference in debug_info_copy()\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.\nSkip the copy loop when the source has no areas.", "A flaw was found in the Linux kernel's s390 debug subsystem. This vulnerability allows a local user to cause a Denial of Service (DoS) through a kernel crash. When static debug registration encounters an error, internal memory pointers are cleared while boundary records remain active. A local user attempting to read or copy the affected debug area, such as by opening its view file, triggers a NULL pointer dereference (an invalid memory access) that crashes the kernel."], "name": "CVE-2026-98593", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98593\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98593\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98593.mbox"], "threat_severity": "Moderate"}

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