CVE-2026-97979

Status: UPDATED  |  Advisory ID: CVE-2026-97979

Key Details

Affected Products, Subsystems & Sectors

What to Know

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. (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References