EUVD-2026-24863
GHSA-fx4x-f93f-2jqv
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
7DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
RDMA/efa: Fix use of completion ctx after free
On admin queue completion handling, if the admin command completed with error we print data from the completion context. The issue is that we already freed the completion context in polling/interrupts handler which means we print data from context in an unknown state (it might be already used again). Change the admin submission flow so alloc/dealloc of the context will be symmetric and dealloc will be called after any potential use of the context.
AnalysisAI
Use-after-free in Linux kernel RDMA/EFA driver allows local authenticated users with low privileges to execute arbitrary code with high confidentiality, integrity, and availability impact. The vulnerability affects the admin queue completion handling where completion context data is accessed after being freed, creating a window for memory corruption exploitation. …
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RemediationAI
Within 24 hours: Identify all systems running affected Linux kernel versions (5.12-7.0-rc7) with EFA driver enabled using kernel version audits and hardware inventory tools. Within 7 days: Apply vendor-released patches to stable branches (6.18.21, 6.19.11, or 7.0 final release once available) via standard kernel update procedures; prioritize systems with untrusted local user access. …
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