# CVE-2026-23421: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/xe/configfs: Free ctx_restore_mid_bb in rele...

CVE-2026-23421 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23421 (version 6.19.8-1), released April 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-23421
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 3, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/xe/configfs: Free ctx_restore_mid_bb in release  ctx_restore_mid_bb memory is allocated in wa_bb_store(), but xe_config_device_release() only frees ctx_restore_post_bb.  Free ctx_restore_mid_bb[0].cs as well to avoid leaking the allocation when the configfs device is removed.  (cherry picked from commit a235e7d0098337c3f2d1e8f3610c719a589e115f)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.19.8-1 | [DEBIAN-CVE-2026-23421](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23421.md) | Apr 3, 2026 |

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Data as of 2026-11-10T01:44:33Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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