# CVE-2026-98917: parisc: Increase kernel stack size to 32kb

CVE-2026-98917 is fixed in linux on 1 platform by DEBIAN-CVE-2026-98917 (version 7.2.9-1), released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-98917
- Priority: Routine
- CVSS: 4.7 (Moderate)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 23, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98917

## Description

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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.2.9-1 | [DEBIAN-CVE-2026-98917](https://patchblox.com/security/data/fix/linux/debian-cve-2026-98917.md) | Oct 24, 2026 |

---

Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.