CVE-2026-98917: Linux kernel · parisc: Increase kernel stack size to 32kb
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in db45f02b7a5f753efc9003f616dfb5ee4cb6d077 : patch Linux kernel soon.
Data as of 26 Oct 2026, 13:07 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in db45f02b7a5f753efc9003f616dfb5ee4cb6d077, 5023c70853ad9829c53d8e9def5ee969b4e1b931, 94b7e3a7e871ae27d4935c76959dfc61829f27f9 +1
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Linux kernel to db45f02b7a5f753efc9003f616dfb5ee4cb6d077, 5023c70853ad9829c53d8e9def5ee969b4e1b931, 94b7e3a7e871ae27d4935c76959dfc61829f27f9 or 4.15.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
Upgrade to Linux kernel version 4.15 or later, where the kernel stack size has been increased to 32 KB for 64-bit parisc kernels, resolving the stack overflow issue. No additional mitigation is required once the system is updated.
Description
A vulnerability in the Linux kernel for the parisc architecture has been addressed by increasing the kernel stack size to 32 KB for 64-bit kernels. This change prevents kernel crashes caused by stack overflows, which were observed during specific workloads such as building the Debian vtk9 package with gcc 17. The issue manifested as kernel panics triggered by low stack detection in interrupt handlers.