What’s Vulnerable › Vulnerabilities

CVE-2025-38187: drm/nouveau: fix a use-after-free in r535_gsp_rpc_push()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-04 · updated 2026-10-21
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: fix a use-after-free in r535_gsp_rpc_push() The RPC container is released after being passed to r535_gsp_rpc_send(). When sending the initial fragment of a large RPC and passing the caller's RPC container, the container will be freed prematurely. Subsequent attempts to send remaining fragments will therefore result in a use-after-free. Allocate a temporary RPC container for holding the initial fragment of a large RPC when sending. Free the caller's container when all fragments are successfully sent. [ Rebase onto Blackwell changes. - Danilo ]

Affected products

• Linux kernel: from 6.7 before 6.15.4; 6.16-rc1, 6.16-rc2 — fixed in 6.15.4

How to fix

Upgrade to a fixed version: Linux kernel 6.15.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/69270d24af7694494ac4116bcad30a812ca49ca7
• https://git.kernel.org/stable/c/9802f0a63b641f4cddb2139c814c2e95cb825099
• https://git.kernel.org/stable/c/cd4677407c0ee250fc21e36439c8a442ddd62cc1

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