{"id":"CVE-2026-98917","state":"PUBLISHED","title":"parisc: Increase kernel stack size to 32kb","description":"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","publishedAt":"2026-10-23T12:01:46.420Z","updatedAt":"2026-10-26T06:56:48.902Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"5023c70853ad9829c53d8e9def5ee969b4e1b931","versionType":"git"},{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"db45f02b7a5f753efc9003f616dfb5ee4cb6d077","versionType":"git"},{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"94b7e3a7e871ae27d4935c76959dfc61829f27f9","versionType":"git"},{"version":"ae3471f65a04451f3670cbde6c59e384cca44dc8","status":"affected","versionType":"git"},{"version":"4.14.24","status":"affected","lessThan":"4.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/include/asm/thread_info.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","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/parisc/include/asm/thread_info.h"]}],"references":["https://git.kernel.org/stable/c/5023c70853ad9829c53d8e9def5ee969b4e1b931","https://git.kernel.org/stable/c/db45f02b7a5f753efc9003f616dfb5ee4cb6d077","https://git.kernel.org/stable/c/94b7e3a7e871ae27d4935c76959dfc61829f27f9"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98917.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98917","state":"PUBLISHED","datePublished":"2026-10-23T12:01:46.420Z","dateUpdated":"2026-10-26T06:56:48.902Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.380Z"},"containers":{"cna":{"title":"parisc: Increase kernel stack size to 32kb","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":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"5023c70853ad9829c53d8e9def5ee969b4e1b931","versionType":"git"},{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"db45f02b7a5f753efc9003f616dfb5ee4cb6d077","versionType":"git"},{"version":"da57c5414f49ef9e4bcb9ae0bbafd1d650b31411","status":"affected","lessThan":"94b7e3a7e871ae27d4935c76959dfc61829f27f9","versionType":"git"},{"version":"ae3471f65a04451f3670cbde6c59e384cca44dc8","status":"affected","versionType":"git"},{"version":"4.14.24","status":"affected","lessThan":"4.15","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/parisc/include/asm/thread_info.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","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/parisc/include/asm/thread_info.h"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-26T06:56:48.902Z"},"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"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}