pvscsi_ring_pop_cmp_descr(PVSCSIRingInfo *mgr)
{
    /*
     * According to Linux driver code it explicitly verifies that number
     * of requests being processed by device is less then the size of
     * completion queue, so device may omit completion queue overflow
     * conditions check. We assume that this is true for other (Windows)
     * drivers as well.
     */

    uint32_t free_cmp_ptr =
        mgr->filled_cmp_ptr++ & mgr->rxr_len_mask;
    uint32_t free_cmp_page =
        free_cmp_ptr / PVSCSI_MAX_NUM_CMP_ENTRIES_PER_PAGE;
    uint32_t inpage_idx =
        free_cmp_ptr % PVSCSI_MAX_NUM_CMP_ENTRIES_PER_PAGE;
    return mgr->cmp_ring_pages_pa[free_cmp_page] +
           inpage_idx * sizeof(PVSCSIRingCmpDesc);
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.