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CVE-2025-38449 is a reference-counting flaw in the Linux kernel DRM/GEM framebuffer path. A GEM handle can be released while its associated GEM buffer object remains attached to a DRM framebuffer. If the object is backed by a dma-buf, releasing the handle can prematurely release that backing object even though the framebuffer remains usable. Subsequent modesetting or page-flip operations may dereference the stale dma-buf, including through dma_buf_vmap(), causing a kernel fault. The underlying flaw predates expanded use of the GEM object's dma-buf field, which made the fault easier to trigger. The fix obtains GEM-handle references for buffer objects attached to a framebuffer and releases them during framebuffer cleanup.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel DRM/GEM framebuffer reference-management flaw.
Linux kernel DRM GEM framebuffer-handle reference-management flaw.
A Linux kernel DRM/GEM flaw caused by missing reference acquisition on GEM handles used for framebuffers.
A Linux kernel DRM/GEM reference-management flaw involving GEM handles used for framebuffers.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.