# CVE-2022-49203: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/amd/display: Fix double free during GPU rese...

CVE-2022-49203 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-49203, released February 26, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2022-49203
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 26, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/amd/display: Fix double free during GPU reset on DC streams  [Why] The issue only occurs during the GPU reset code path.  We first backup the current state prior to commiting 0 streams internally from DM to DC. This state backup contains valid link encoder assignments.  DC will clear the link encoder assignments as part of current state (but not the backup, since it was a copied before the commit) and free the extra stream reference it held.  DC requires that the link encoder assignments remain cleared/invalid prior to commiting. Since the backup still has valid assignments we call the interface post reset to clear them. This routine also releases the extra reference that the link encoder interface held - resulting in a double free (and eventually a NULL pointer dereference).  [How] We'll have to do a full DC commit anyway after GPU reset because the stream count previously went to 0.  We don't need to retain the assignment that we had backed up, so just copy off of the now clean current state assignment after the reset has occcurred with the new link_enc_cfg_copy() interface.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.17.3-1 | [DEBIAN-CVE-2022-49203](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49203.md) | Feb 26, 2025 |
| Linux | linux Debian 13.5 (trixie) | 5.17.3-1 | [DEBIAN-CVE-2022-49203](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49203.md) | Feb 26, 2025 |
| Linux | linux Debian 14 | 5.17.3-1 | [DEBIAN-CVE-2022-49203](https://patchblox.com/security/data/fix/linux/debian-cve-2022-49203.md) | Feb 26, 2025 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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