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CVE-2025-40251 is a dangling-pointer vulnerability in the Linux kernel devlink rate subsystem. The devl_rate_nodes_destroy function invokes the driver-specific rate_leaf_parent_set or rate_node_parent_set operation and decrements the parent's reference count without clearing devlink_rate->parent. Subsequent rate-object cleanup encounters the stale parent pointer, causing reference-count errors. Reproductions involving netdevsim device deletion and mlx5 driver teardown produce kernel warnings and memory leaks. The fix explicitly sets devlink_rate->parent to NULL after notifying the driver.
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A Linux kernel devlink rate-node vulnerability addressed by clearing the parent pointer in devl_rate_nodes_destroy. The content does not specify its impact. Affected Rocky Linux 10.1 kernel packages have security updates under CIQ advisory crlsa-2026_1690.
A Linux kernel devlink rate-management vulnerability leaves a dangling parent pointer during rate-node destruction. Reproduction examples show reference-count warnings and memory leaks in netdevsim and mlx5. The advisory assigns CVSS v3 severity 5.5, with local access, low privileges, and high availability impact; no confidentiality or integrity impact is indicated. The patch explicitly clears the parent pointer.
A Linux kernel devlink rate-management flaw leaves a dangling parent pointer during rate-node destruction, causing reference-count errors and memory leaks demonstrated with netdevsim and mlx5. The advisory rates it Medium, with CVSS v3 5.5, describing a local availability impact without confidentiality or integrity impact. The fix explicitly clears the parent pointer after notifying the driver.
A Linux kernel devlink rate handling vulnerability involving parent pointer cleanup in devl_rate_nodes_destroy.
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