CVE-2026-98917

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98917", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.380Z", "datePublished": "2026-10-23T12:01:46.420Z", "dateUpdated": "2026-10-26T06:56:48.902Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-26T06:56:48.902Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nparisc: Increase kernel stack size to 32kb\n\nFor 64-bit Linux kernels, increase the default kernel stack size\n(THREAD_SIZE_ORDER) to 32 kB, in order to avoid kernel crashes which have been\ntriggered recently when building the debian vtk9 package with gcc 17:\n\nstackcheck: kworker/u128:0 will most likely overflow kernel stack (sp:179a83af0, stk bottom-top:179a80000-179a84000)\nKernel panic - not syncing: low stack detected by irq handler - check messages\nCPU: 2 UID: 0 PID: 30760 Comm: kworker/u128:0 Tainted: G W 6.18.46-dirty #1 NONE\nTainted: [W]=WARN\nHardware name: 9000/800/rp3440\nWorkqueue: writeback wb_workfn (flush-259:0)\nBacktrace:\n [<000000004022f050>] show_stack+0x70/0x90\n [<000000004022378c>] dump_stack_lvl+0x124/0x190\n [<000000004022382c>] dump_stack+0x34/0x48\n [<000000004020212c>] vpanic+0x204/0x648\n [<00000000402025c4>] panic+0x54/0x58\n [<0000000040232230>] do_cpu_irq_mask+0x3f8/0x440\n [<0000000040227070>] intr_return+0x0/0xc"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/parisc/include/asm/thread_info.h"], "versions": [{"version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "lessThan": "5023c70853ad9829c53d8e9def5ee969b4e1b931", "status": "affected", "versionType": "git"}, {"version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "lessThan": "db45f02b7a5f753efc9003f616dfb5ee4cb6d077", "status": "affected", "versionType": "git"}, {"version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "lessThan": "94b7e3a7e871ae27d4935c76959dfc61829f27f9", "status": "affected", "versionType": "git"}, {"version": "ae3471f65a04451f3670cbde6c59e384cca44dc8", "status": "affected", "versionType": "git"}, {"version": "4.14.24", "lessThan": "4.15", "status": "affected", "versionType": "semver"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/parisc/include/asm/thread_info.h"], "versions": [{"version": "4.15", "status": "affected"}, {"version": "0", "lessThan": "4.15", "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": "4.15", "versionEndExcluding": "6.18.55"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "7.2.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.15", "versionEndExcluding": "7.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.14.24"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/5023c70853ad9829c53d8e9def5ee969b4e1b931"}, {"url": "https://git.kernel.org/stable/c/db45f02b7a5f753efc9003f616dfb5ee4cb6d077"}, {"url": "https://git.kernel.org/stable/c/94b7e3a7e871ae27d4935c76959dfc61829f27f9"}], "title": "parisc: Increase kernel stack size to 32kb", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/parisc/include/asm/thread_info.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "5023c70853ad9829c53d8e9def5ee969b4e1b931", "status": "affected", "version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "versionType": "git"}, {"lessThan": "db45f02b7a5f753efc9003f616dfb5ee4cb6d077", "status": "affected", "version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "versionType": "git"}, {"lessThan": "94b7e3a7e871ae27d4935c76959dfc61829f27f9", "status": "affected", "version": "da57c5414f49ef9e4bcb9ae0bbafd1d650b31411", "versionType": "git"}, {"status": "affected", "version": "ae3471f65a04451f3670cbde6c59e384cca44dc8", "versionType": "git"}, {"lessThan": "4.15", "status": "affected", "version": "4.14.24", "versionType": "semver"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/parisc/include/asm/thread_info.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.15"}, {"lessThan": "4.15", "status": "unaffected", "version": "0", "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\nparisc: Increase kernel stack size to 32kb\n\nFor 64-bit Linux kernels, increase the default kernel stack size\n(THREAD_SIZE_ORDER) to 32 kB, in order to avoid kernel crashes which have been\ntriggered recently when building the debian vtk9 package with gcc 17:\n\nstackcheck: kworker/u128:0 will most likely overflow kernel stack (sp:179a83af0, stk bottom-top:179a80000-179a84000)\nKernel panic - not syncing: low stack detected by irq handler - check messages\nCPU: 2 UID: 0 PID: 30760 Comm: kworker/u128:0 Tainted: G W 6.18.46-dirty #1 NONE\nTainted: [W]=WARN\nHardware name: 9000/800/rp3440\nWorkqueue: writeback wb_workfn (flush-259:0)\nBacktrace:\n [<000000004022f050>] show_stack+0x70/0x90\n [<000000004022378c>] dump_stack_lvl+0x124/0x190\n [<000000004022382c>] dump_stack+0x34/0x48\n [<000000004020212c>] vpanic+0x204/0x648\n [<00000000402025c4>] panic+0x54/0x58\n [<0000000040232230>] do_cpu_irq_mask+0x3f8/0x440\n [<0000000040227070>] intr_return+0x0/0xc"}], "id": "CVE-2026-98917", "lastModified": "2026-10-26T07:17:17.630", "metrics": {}, "published": "2026-10-23T13:17:12.247", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5023c70853ad9829c53d8e9def5ee969b4e1b931"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/94b7e3a7e871ae27d4935c76959dfc61829f27f9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/db45f02b7a5f753efc9003f616dfb5ee4cb6d077"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: parisc: Increase kernel stack size to 32kb", "id": "2559651", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2559651"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nparisc: Increase kernel stack size to 32kb\nFor 64-bit Linux kernels, increase the default kernel stack size\n(THREAD_SIZE_ORDER) to 32 kB, in order to avoid kernel crashes which have been\ntriggered recently when building the debian vtk9 package with gcc 17:\nstackcheck: kworker/u128:0 will most likely overflow kernel stack (sp:179a83af0, stk bottom-top:179a80000-179a84000)\nKernel panic - not syncing: low stack detected by irq handler - check messages\nCPU: 2 UID: 0 PID: 30760 Comm: kworker/u128:0 Tainted: G W 6.18.46-dirty #1 NONE\nTainted: [W]=WARN\nHardware name: 9000/800/rp3440\nWorkqueue: writeback wb_workfn (flush-259:0)\nBacktrace:\n[<000000004022f050>] show_stack+0x70/0x90\n[<000000004022378c>] dump_stack_lvl+0x124/0x190\n[<000000004022382c>] dump_stack+0x34/0x48\n[<000000004020212c>] vpanic+0x204/0x648\n[<00000000402025c4>] panic+0x54/0x58\n[<0000000040232230>] do_cpu_irq_mask+0x3f8/0x440\n[<0000000040227070>] intr_return+0x0/0xc", "A flaw was found in the Linux kernel's PA-RISC architecture support. This vulnerability can lead to a Denial of Service (DoS) when deep call chains cause a kernel stack overflow on 64-bit systems. A local user executing complex or resource-intensive workloads can trigger this condition, causing the system to crash."], "name": "CVE-2026-98917", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Not affected", "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": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98917\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98917\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98917.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5023c70853ad9829c53d8e9def5ee969b4e1b931)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,db45f02b7a5f753efc9003f616dfb5ee4cb6d077)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,94b7e3a7e871ae27d4935c76959dfc61829f27f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.55)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.2.9)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.55,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.9,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,5023c70853ad9829c53d8e9def5ee969b4e1b931)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,db45f02b7a5f753efc9003f616dfb5ee4cb6d077)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,94b7e3a7e871ae27d4935c76959dfc61829f27f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.55)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,7.2.9)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.55,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2.9,7.2.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-23T16:00:15.835648+00:00", "title": "Kernel stack overflow leading to kernel panic in 64-bit Linux", "updated": "2026-10-30T00:00:06.466175+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"]}