# CVE-2026-52966: linux: In the Linux kernel, the following vulnerability has been resolved:  drm: Replace old pointer to new idr  Commit 5e28...

CVE-2026-52966 is fixed in linux on 1 platform by DEBIAN-CVE-2026-52966 (version 7.0.10-1), released June 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-52966
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0017
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 24, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm: Replace old pointer to new idr  Commit 5e28b7b94408 introduced a logical error by failing to replace the newly generated IDR pointer to old id's pointer at the correct location within the "change handle" logic; this resulted in the issue reported by syzbot [1].  Specifically, the new IDR object pointer is intended to replace the original id's pointer during the normal execution flow.  Additionally, an unnecessary conditional check for the ret exit path has been removed.  [1] !RB_EMPTY_ROOT(&prime_fpriv->dmabufs) WARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/5833 Call Trace:  drm_file_free.part.0+0x7e6/0xcc0 drivers/gpu/drm/drm_file.c:269  drm_file_free drivers/gpu/drm/drm_file.c:237 [inline]  drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:290  drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:438

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.10-1 | [DEBIAN-CVE-2026-52966](https://patchblox.com/security/data/fix/linux/debian-cve-2026-52966.md) | Jun 25, 2026 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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