What is CVE-2026-23421?

CVE-2026-23421 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-04-03.

How severe is CVE-2026-23421?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Linux

CVE-2026-23421

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)

EPSS: 0.001 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Linux — versions b30d5de3d40c3fa642079bac0d91f17091c5f877, 6.18, 0
Linux Linux_kernel — versions 6.18, 7.0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-23421?: CVE-2026-23421 is a medium-severity vulnerability in Linux. CVSS score: 5.5/10. Published 2026-04-03.
How severe is CVE-2026-23421?: Medium severity. CVSS v3 base score is 5.5 out of 10.