# CVE-2026-93058: drm/msm: Only fini scheduler after successful init

CVE-2026-93058 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-93058, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-93058
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0021
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2026
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-93058

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/msm: Only fini scheduler after successful init  msm_ringbuffer_new() destroys a partially initialized ring through msm_ringbuffer_destroy() when an allocation or scheduler setup step fails.  If drm_sched_init() fails before it finishes initializing the scheduler, the failure path still calls drm_sched_fini(). That teardown path assumes the scheduler work items, lists, and workqueue state were initialized.  Track successful scheduler initialization and call drm_sched_fini() only after drm_sched_init() returned 0.  This issue was found by a static analysis checker and confirmed by manual source review.  Patchwork: https://patchwork.freedesktop.org/patch/738905/

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 13.5 (trixie) | 6.12.115-2 | [DEBIAN-CVE-2026-93058](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93058.md) | Sep 23, 2026 |
| Linux | linux Debian 14 | 7.2.6-1 | [DEBIAN-CVE-2026-93058](https://patchblox.com/security/data/fix/linux/debian-cve-2026-93058.md) | Sep 23, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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