CVE-2026-97979
UnknownSummary
A memory leak was found in the Linux kernel's Intel ICE network driver. The missing xa_destroy call for the sched_node_ids structure can cause memory leaks even after all elements are removed. The fix moves the structure to the hw struct and adds proper cleanup.
Risk Assessment
The memory leak can lead to gradual system performance degradation, especially during devlink reload or DDP update operations, potentially causing service unavailability over time.
Recommendation
Apply the kernel patch containing the ice driver fix immediately to prevent memory leaks. Monitor memory usage on systems with Intel NICs.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: ice: add missing xa_destroy for sched_node_ids Commit 16dfa49406bc ("ice: Introduce new parameters in ice_sched_node") added a sched_node_ids xarray to the port info structure, but never called xa_destroy on it. Since xarrays can allocate internal memory, this can result in a memory leak even if every element in the xarray has been removed. The xarray is currently embedded in the port_info structure. This appears to have been done because its use is within functions that take the port_info as a primary argument. However, this complicates managing the lifecycle of the field. The port_info structure is allocated in ice_init_hw() using devm, and it is not released until the devm cleanup when the driver is unloaded. The ice_init_hw() function is called in many places, including devlink reload, and possibly during DDP load after updating the Tx scheduler layout. Adding a call of xa_destroy to the ice_deinit_hw() causes Sashiko to raise multiple concerns due to potential ordering issues and possible ways that port_info could be a dangling reference. To handle this, move the sched_node_ids out of port_info and into the hw structure. All users of the array already have a pointer to hw anyways, and there is only one sched_node_ids per adapter. While here, remove the overly verbose comment explaining the nature of the sched_node_ids xarray. Add the missing xa_destroy to the cleanup path and to ice_deinit_hw(), ensuring that we properly release the xarray memory. This was caught by Sashiko during development of unrelated code.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS