CVE Catalog

CVE-2026-72359

Low risk· EPSS 10%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.20%

10th percentile - higher than 10% of all known CVEs

Summary

In the Linux kernel, the drm/xe driver has a NULL pointer dereference vulnerability in bo_meminfo(). When a buffer object is purged, its ttm.resource is set to NULL, but the BO remains in the client's list. Querying memory stats during this time leads to a NULL dereference.

Risk Assessment

The risk includes potential system crashes (kernel panic) when querying memory statistics, especially during device resume, which could lead to system unavailability.

Recommendation

Apply the patch that skips purged BOs in bo_meminfo() and add a general NULL check for the resource to prevent dereferencing.

Other vulnerabilities in Linux kernel

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Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: drm/xe: fix NPD in bo_meminfo() When a buffer object is purged, its ttm.resource is set to NULL via the TTM pipeline gutting flow. However, the BO remains in the client's object list until userspace explicitly closes the GEM handle. If memory stats are queried during this time, accessing bo->ttm.resource->mem_type will result in a NULL pointer dereference. Fix this by safely skipping purged BOs in bo_meminfo, as they no longer consume any memory. User is getting NPD on device resume, and possible theory is that in bo_move(), if we need to evict something to SYSTEM to save the CCS state, but the BO is marked as dontneed, this won't trigger a move but will nuke the pages, leaving us with a NULL bo resource. And the meminfo() doesn't look ready to handle a NULL resource. v2 (Sashiko): - There could potentially be other cases where we might end up with a NULL resource, so make this a general NULL check for now. (cherry picked from commit c9a8e7daa0afe3161111e27fd92176e608c7f186)

Vulnerability data from NVD (NIST) · CISA KEV · EPSS