Out-of-Bounds Write in Samsung Exynos NPU Driver npu_queue_update
CVE-2025-23103 is a high-severity out-of-bounds write vulnerability in the Samsung Exynos NPU driver affecting Exynos 1480 and Exynos 2400 platforms. The flaw is caused by a missing length check in the npu_queue_update function. Specifically, the function processes queue containers using a user-controlled count value without validating that count against the allocated size of queue_list. As a result, the loop can iterate past the end of the allocated containers array, causing q_container to reference memory beyond the intended bounds and leading to writes of attacker-controlled data into adjacent kernel memory. A further out-of-bounds write may occur when q_buffer is derived from an out-of-bounds q_container. Samsung indicated the issue is reachable from the untrusted_app SELinux context with low privileges and no user interaction.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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.