CVE-2026-64118

In the Linux kernel, the following vulnerability has been resolved:

qed: fix double free in qedcxttables_alloc()

If one of the later PF or VF CID bitmap allocations fails, qedcidmapalloc() jumps to cidmapfail and frees the previously allocated CID bitmaps before returning an error. qedcxttablesalloc() then calls qedcxtmngrfree(), which invokes qedcidmapfree() again.

Fix this by setting each CID bitmap pointer to NULL after bitmap_free() to avoid double free.

The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3.

Runtime reproduction was not attempted because exercising the failing allocation path requires device-specific setup.