Linux Kernel parisc Stack Size Increase to 32KB to Prevent Kernel Panic
CVE-2026-98917 Published on October 23, 2026
parisc: Increase kernel stack size to 32kb
In the Linux kernel, the following vulnerability has been resolved:
parisc: Increase kernel stack size to 32kb
For 64-bit Linux kernels, increase the default kernel stack size
(THREAD_SIZE_ORDER) to 32 kB, in order to avoid kernel crashes which have been
triggered recently when building the debian vtk9 package with gcc 17:
stackcheck: kworker/u128:0 will most likely overflow kernel stack (sp:179a83af0, stk bottom-top:179a80000-179a84000)
Kernel panic - not syncing: low stack detected by irq handler - check messages
CPU: 2 UID: 0 PID: 30760 Comm: kworker/u128:0 Tainted: G W 6.18.46-dirty #1 NONE
Tainted: [W]=WARN
Hardware name: 9000/800/rp3440
Workqueue: writeback wb_workfn (flush-259:0)
Backtrace:
[<000000004022f050>] show_stack+0x70/0x90
[<000000004022378c>] dump_stack_lvl+0x124/0x190
[<000000004022382c>] dump_stack+0x34/0x48
[<000000004020212c>] vpanic+0x204/0x648
[<00000000402025c4>] panic+0x54/0x58
[<0000000040232230>] do_cpu_irq_mask+0x3f8/0x440
[<0000000040227070>] intr_return+0x0/0xc
Products Associated with CVE-2026-98917
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Affected Versions
Linux:- Version da57c5414f49ef9e4bcb9ae0bbafd1d650b31411 and below 5023c70853ad9829c53d8e9def5ee969b4e1b931 is affected.
- Version da57c5414f49ef9e4bcb9ae0bbafd1d650b31411 and below db45f02b7a5f753efc9003f616dfb5ee4cb6d077 is affected.
- Version da57c5414f49ef9e4bcb9ae0bbafd1d650b31411 and below 94b7e3a7e871ae27d4935c76959dfc61829f27f9 is affected.
- Version ae3471f65a04451f3670cbde6c59e384cca44dc8 is affected.
- Version 4.14.24 and below 4.15 is affected.
- Version 4.15 is affected.
- Before 4.15 is unaffected.
- Version 6.18.55, <= 6.18.* is unaffected.
- Version 7.2.9, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.